The Battle Chatelaines did the Battle Facility Head role right.
These four are often overlooked. They tend to be ignored or disliked for replacing the Battle Frontier heads in ORAS. Despite this, they have the most jacked up teams of any Battle Facility Head.
https://bulbapedia.bulbagarden.net/wiki/Nita#Super_Single_Battle_.28on_50th_consecutive_battle.29
https://bulbapedia.bulbagarden.net/wiki/Evelyn#Super_Double_Battle_.28on_50th_consecutive_battle.29
https://bulbapedia.bulbagarden.net/wiki/Dana#Super_Triple_Battle_.28on_50th_consecutive_battle.29
https://bulbapedia.bulbagarden.net/...ation_Battle_.28on_50th_consecutive_battle.29
The Battle Chatelaines have insane teams stacked entirely with powerful legendaries each and show themselves to be really scary in battle. Many people don't like this because there's no context as to how they got these legendaries (tbf there's never context for how anyone in a battle facility got a legendary), but it shows how these four trainers are effective heads of their battle facility and can even be fun to face off against. Nita's team in particular is insane because she has three legendary genies with moves and items to cover up for their weaknesses. You have to actually strategize around finding a clear way to maneuver through them sometimes and can even easily lose if you get lucked out by Tornadus.
Battle Facilities are made to be challenging aspects of the Pokemon games. In each of these, the player builds themselves up to face off stronger and stronger trainers throughout their streak. Once the player reaches (28+ wins before Gen 6, 40+ wins in Gens 6-7), they are able to face off against higher level trainers with stronger Pokemon, including teams with lower tier legendaries. Battle Facility Heads are supposed to be leaders of these; the strongest of them all, but plenty of them have teams that just don't cut it.
Here are some examples:
https://bulbapedia.bulbagarden.net/wiki/Lucy#Gold_Symbol_challenge
- Pike Queen Lucy is head of the Battle Pike, one of the seven facilities in the Emerald Battle Frontier. In her final match she leads off with a Seviper and a Steelix. Two Pokemon that are pretty subpar for how far you have to go, where other trainers on this level in challenges have Tyranitar, Dragonite, and Latios. I get the theme of the Battle Pike were supposed to be serpents, but I don't get the purpose of it if it just stunts what Pokemon the leader can use to an extent this significant.
https://bulbapedia.bulbagarden.net/wiki/Emmet#On_49th_consecutive_battle
https://bulbapedia.bulbagarden.net/wiki/Ingo#On_49th_consecutive_battle
https://bulbapedia.bulbagarden.net/wiki/Emmet#On_49th_consecutive_battle_2
- Ingo and Emmet are leaders of the Battle Subway. While this is a good battle facility of its own, the heads could've had better Pokemon. If people are running stuff like Cresselia, Heatran, Salamence, Ferrothorn, and Garchomp before you reach them, plenty of regular trainers can have noticeably better teams than Ingo and Emmet before you reach them.
https://bulbapedia.bulbagarden.net/...ingle_Battle_.28on_50th_consecutive_battle.29
- Red is known as a Battle Legend but is a really awful offender of this same issue. I've had a 50 streak run where he ended up being easier than all 49 trainers it took to reach him because of how subpar his Pokemon were for a streak this high. His team is objectively worse than most if not all the previous 10 trainers you face off before him and could easily be the easiest match you battle in a 50 streak if you are that unfortunate. He holds the position of Battle Legend and Battle Tree head when he really should not.
On another note, the Battle Chatelaines have more real personality than any other Battle Facility Head I've ever seen. Nita is very rash and hasty, Evelyn is very shy, Dana is very sassy but is a little afraid of Morgan, Morgan is very careful and the most mature about the way she treats players. She is also the de-facto leader of the group.
Battle Facility Heads did not need to have as strong of personalities as they did and I didn't expect to see the Battle Chatelaines like this but it was a nice touch to have this in the games they were in.
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On another note the Battle Maison as a whole is overlooked. I used to overlook it for the longest time because it wasn't seen as great, but was forced to try it out because it was the only way to get Porygon-Z in Alpha Sapphire. I've discovered that, if I'm not going crazy, the Battle Maison seems to be like a Battle Frontier in one building.
The Platinum Battle Frontier was 5 different modes for the player to challenge themselves and get rewarded in, with each being in different buildings.
The Battle Maison was 5 different modes for the player to challenge themselves and get rewarded in, with each being in the same building.
The main difference is that instead of having them all required to be singles and singles with different sprinkles on top, each of these modes were more vastly different. One was singles, one was doubles, one was triples, one was rotational, and one was doubles but you had to work with someone else. Five entirely different playstyles the game tries to have you master as opposed to one.
These four are often overlooked. They tend to be ignored or disliked for replacing the Battle Frontier heads in ORAS. Despite this, they have the most jacked up teams of any Battle Facility Head.
https://bulbapedia.bulbagarden.net/wiki/Nita#Super_Single_Battle_.28on_50th_consecutive_battle.29
https://bulbapedia.bulbagarden.net/wiki/Evelyn#Super_Double_Battle_.28on_50th_consecutive_battle.29
https://bulbapedia.bulbagarden.net/wiki/Dana#Super_Triple_Battle_.28on_50th_consecutive_battle.29
https://bulbapedia.bulbagarden.net/...ation_Battle_.28on_50th_consecutive_battle.29
The Battle Chatelaines have insane teams stacked entirely with powerful legendaries each and show themselves to be really scary in battle. Many people don't like this because there's no context as to how they got these legendaries (tbf there's never context for how anyone in a battle facility got a legendary), but it shows how these four trainers are effective heads of their battle facility and can even be fun to face off against. Nita's team in particular is insane because she has three legendary genies with moves and items to cover up for their weaknesses. You have to actually strategize around finding a clear way to maneuver through them sometimes and can even easily lose if you get lucked out by Tornadus.
Battle Facilities are made to be challenging aspects of the Pokemon games. In each of these, the player builds themselves up to face off stronger and stronger trainers throughout their streak. Once the player reaches (28+ wins before Gen 6, 40+ wins in Gens 6-7), they are able to face off against higher level trainers with stronger Pokemon, including teams with lower tier legendaries. Battle Facility Heads are supposed to be leaders of these; the strongest of them all, but plenty of them have teams that just don't cut it.
Here are some examples:

https://bulbapedia.bulbagarden.net/wiki/Lucy#Gold_Symbol_challenge
- Pike Queen Lucy is head of the Battle Pike, one of the seven facilities in the Emerald Battle Frontier. In her final match she leads off with a Seviper and a Steelix. Two Pokemon that are pretty subpar for how far you have to go, where other trainers on this level in challenges have Tyranitar, Dragonite, and Latios. I get the theme of the Battle Pike were supposed to be serpents, but I don't get the purpose of it if it just stunts what Pokemon the leader can use to an extent this significant.


https://bulbapedia.bulbagarden.net/wiki/Emmet#On_49th_consecutive_battle
https://bulbapedia.bulbagarden.net/wiki/Ingo#On_49th_consecutive_battle
https://bulbapedia.bulbagarden.net/wiki/Emmet#On_49th_consecutive_battle_2
- Ingo and Emmet are leaders of the Battle Subway. While this is a good battle facility of its own, the heads could've had better Pokemon. If people are running stuff like Cresselia, Heatran, Salamence, Ferrothorn, and Garchomp before you reach them, plenty of regular trainers can have noticeably better teams than Ingo and Emmet before you reach them.

https://bulbapedia.bulbagarden.net/...ingle_Battle_.28on_50th_consecutive_battle.29
- Red is known as a Battle Legend but is a really awful offender of this same issue. I've had a 50 streak run where he ended up being easier than all 49 trainers it took to reach him because of how subpar his Pokemon were for a streak this high. His team is objectively worse than most if not all the previous 10 trainers you face off before him and could easily be the easiest match you battle in a 50 streak if you are that unfortunate. He holds the position of Battle Legend and Battle Tree head when he really should not.
On another note, the Battle Chatelaines have more real personality than any other Battle Facility Head I've ever seen. Nita is very rash and hasty, Evelyn is very shy, Dana is very sassy but is a little afraid of Morgan, Morgan is very careful and the most mature about the way she treats players. She is also the de-facto leader of the group.
Battle Facility Heads did not need to have as strong of personalities as they did and I didn't expect to see the Battle Chatelaines like this but it was a nice touch to have this in the games they were in.
===============================================================================================
On another note the Battle Maison as a whole is overlooked. I used to overlook it for the longest time because it wasn't seen as great, but was forced to try it out because it was the only way to get Porygon-Z in Alpha Sapphire. I've discovered that, if I'm not going crazy, the Battle Maison seems to be like a Battle Frontier in one building.
The Platinum Battle Frontier was 5 different modes for the player to challenge themselves and get rewarded in, with each being in different buildings.
The Battle Maison was 5 different modes for the player to challenge themselves and get rewarded in, with each being in the same building.
The main difference is that instead of having them all required to be singles and singles with different sprinkles on top, each of these modes were more vastly different. One was singles, one was doubles, one was triples, one was rotational, and one was doubles but you had to work with someone else. Five entirely different playstyles the game tries to have you master as opposed to one.