Here's some more:
Garchomp is easily my least favorite pseudo-legendary, even if it didn't take any glory from Flygon*.
The Assault Vest is the coolest hold item. I didn't say the best, just the coolest (I love the concept and effect. That and it makes my Goodra, Excadrill, and Exploud amazing).
Speaking of, Exploud is awesome. Especially with the Generation VI model showing off how it looks with its mouth closed to more people**.
There are problems with Sylveon's design that causes it to be my least favorite Eeveeultion. Mostly that the eyes do not match the rest of the evolutionary family. It just feels wrong.
I tend to love the Pokémon that no one loves. Farfetch'd, Delibird, Dunsparce, all of which are cool, if very weak, Pokémon.
And here is the real unpopular opinion:
Generation I has problems, but was amazing for the time. Yeah, it had no post game, but at the time, that didn't matter. We were too busy trying to catch 'em all. Yeah, they are bugged up the ass, but in a way, that makes replaying them years later fun since we can try to hunt down all those faults. Yeah, there was severe balancing issues, but what isn't it just the beginning? If they did everything perfect in Generation I, what would be left for later Generations?
People either are blinded by nostalgia or are so annoyed by genwunners that they go to the other extreme. Actually, I find this too often in this fandom with every element (the popularity of Pikachu, the competitive vs casual debate which shouldn't even be a debate since there isn't one way to play Pokémon, etc.), but that is a rant for another time and place.
What I am trying to say is that the real unpopular opinion about Generation I isn't that it is the worst or the best, but that it is the most important and that even with its many flaws, it is fun. (I don't see the world in black and white, but rather in shades of B2W2...uh, I mean Kyurem...screw it)
*For being a Dragon/Ground-type. I know Flygon isn't a pseudo-legendary.
**It had been seen in other media and likely other games outside the main series.
- I despise forced Legendary encounters during a game's story. I think the original idea for Legendaries worked the best: Yes, they're out there, but they require you to go off the beaten path, explore the depths of optional dungeons and prepare for a tough battle. The effort required to catch them make them seem all the more elusive and mysterious. It's not quite the same to have them handed to you for free just around the middle of the game.
- I dislike the idea of continuity between Pokémon games. It's obvious GameFreak made no attempt to establish any coherent timeline, apart from vague throwaway lines and shout-outs to older games. Coherence is simply not meant to be a feature of the franchise.
I fully agree with you on these. Especially in reference to the Latis in ORAS.