My opinions:
Pokemon:
-Wishiwashi. Not one of my favorites, but not one of my least favorites either. It's just meh to me.
-Pyukumuku. I like him a lot, but there's not enough room on my party for him.
-Morellul. Another forgotten grass type. I can see it now. But anyway, he's alright I guess.
Alola Forms:
-Alolan Marowak. I love this thing. Either he, or Alolan Exeggutor will get the last spot on my team.
-Alolan Meowth. I never liked Meowth in general, and I haven't strong feelings for this either. But it's a step up from the original in my opinion.
-Alolan Raichu. This may be the very first time I like the original better. What even is this thing? Why'd it gain the Psychic type, and why does it ride on its tail? Oh I get it... He thinks he's the Silver Surfer! (I'll shut up now) But how does this help him adapt to Alola? He better have a good reason, or my distaste for this will likely grow worse...
Evil Team:
After seeing these screenshots, and them in better lighting and all, I don't hate them anymore. They actually look... kinda like real thugs, and not just all the punks from all the other regions forming one massive group. I still wish that they'd have continued Team Flare's story, along with the XY and ORAS stiry all together, but I'll give these guys a chance.
Overall:
Well besides Alolan Raichu, this is all positive in my opinion at least. It only makes me even more hyped for these games! The only reason I'm a bit mad I'm writing this right now, is because I wanted the trailer on Friday to be a surprise. Now, it won't be.