Whoa, a lot of info just revealed! Gotta collect my thoughts together:
Legendary Hunt - USUM Edition:
ALL. THE. LEGENDARIES! You know what that means, right?... We can catch them in Apricorn Poke Balls! *squeals*
Okay, joking aside (well, for most of us, I'm sure some are excited about catching Cresselia in a Moon Ball), I guess they figured since it's the generation of the 20th Anniversary, the ORAS Legendary Hunt was a popular feature, and it's the last game on a Nintendo console that's solely a handheld they'll do a full Legendary Hunt (minus Deoxys, so I guess its back to being considered a Mythical).
Glad to see that, like the Ultra Beasts, the Legendaries are getting locations based on environments where you would find them. They don't tell you how you'll get there, gotta save something for the actual game I guess, but hopefully there's no timed ones like in ORAS.
Of course there's version exclusives and overall I'm liking the ones in Ultra Moon. Would prefer Dialga over Palkia and Latios over Latias but I've got extra of them anyway so it's no big deal. And it's cute how they made the Legendary Beasts version exclusive and you need Raikou & Entei to get Suicune, small nod to Crystal appreciated. Odd Regigigas is one, you'd think it would be one of the special Pokemon that needed the Golem Trio. Surprised it's not Cresselia, MAYBE hinting my prediction of Darkrai the nexy Mythical to become available in-game being right?
(1463, why exactly that number? And this isn't a imperial/metric thing, they're using light-years (an astronomical unit))
Battle Agency:
Rental Pokemon are back, but seemingly not in the same way as the Battle Factory? The wording is very vague, it says "The Pokemon you can rent for these battles will increase as you mingle with other players around you or over the internet". So does that mean before entering you'll get better rental options or as you battle through you can swap Pokemon like in the Battle Factory? Though eitherway it hints at online functionality (maybe multiplayer?) which is neat, it was a shame previous Battle Facilities didn't it. There's also a grading system which I guess is how you unlock better rentals without getting them off others.
(Wow, Legendaries are so common now they're being given out as rentals...)
Totem Stickers:
So they're finally letting us get our hands on the Totem Pokemon... the most uninteresting part about them. Ooh, you increases the size of the model (which is funny they're treating like a big deal because how many Pokemon sizes are off model?). When people said they wanted the Totem Pokemon they also wanted the aura (and maybe the stat buffs too). But eh, I'll still get them. Free Special Pokemon just for collecting stickers.
Hmm, Salazzle is an Ultra Moon exclusive one. Maybe if I get it I'll use it on my team, speaking of which I don't want to pick Litten again so I got to decide on either Rowlet or Popplio as my Ultra Moon starter...
(Well it's not much but at least it's a small distraction from just collecting Zygarde Cells and Cores)
Island Scan:
Nothing major, just adding in more Pokemon like the Kanto and Hoenn Starters (because Mega Evolutions). Though they also mentioned Greninja. Now I'm sure they just mean a normal Greninja you can breed, though I wonder if they would do something like having a rare chance of it being an Ash-Greninja.
(Normal or Ash-Greninja? Only one way to find out: You can take em', Alolan Marowak!)
And I'll be right back, saving my best thoughts for last:
Team Rainbow Rocket!