So many mixed feelings here. I have to say I love most of the designs, but there are (as always) some bad apples (in my opinion, of course).
I'm really glad Wimpod became the beast we all hoped. He goes straight on my team. I just hope he remains Bug/Water.
Alolan Geodude/Graveler/Golem look badass. I'm hoping for Rock/Electric.
I actually love A-Dugtrio. It is so ridiculous, just as Dugtrio always has been, and the surfer dude theme is such a fantastic fit. I don't see what could have changed about their types though. I'm hoping the "hair" is some kind of dry grass and they're actually Ground/Grass.
I've believed the final starters since Mallow was announced, but I'm glad we finally have confirmation. Their sprites looks so good!
I was never convinced Crabrawler was standalone, and evolving into a yeti crab was an awesome direction to go. I hope he is Fighting/Ice, as others have suggested.
The new lines - bubble-crab, sea urchin, and anchor - look very cool. I am keen to see typings and some flavour text. Not so blown away to consider changing my team right now.
Prevo/smaller forms of the legends are really interesting. Right now I'm on board with the idea that they may be the "other version" forms, as we know Solgaleo and Lunala's power is exerted over all of Alola in Sun and Moon, respectively, so maybe they overpower their counterpart. Or alternatively, maybe they are more flavourful equivalents to the Red and Blue orbs/Black and White stones.
All the Tapus look really cool, and I love the totem face shell theme.
I hate A-Persian with a passion. It is so bad. I don't know what explanation they could possibly give to make me like it. Which really sucks, because I actually like regular Persian and I really wanted a viable version of it. Worst of all (okay, maybe its fat head is worse), it seems to be pure Dark too. So not even special in that regard.
Pikipek becomes a fat stork and then a giant toucan. Wtf. Not only does this mean we don't get a fully evolved woodpecker, or my dream Steel/Flying region bird, but they look like they stay Normal/Flying, and I've had enough of that at this point. I just hope Vikavolt does for region bugs what Talonflame did for region birds, because Mr. Toucan does not seem to be following in Talonflame's footsteps.
There are a lot of Pokemon I was "meh" towards that I hoped would get evos. They didn't, so I remain "meh".
I hope they don't make too big a deal out of all those Pikachu forms, because it gets so much special treatment already and I really wanted this gen to be Raichu's chance to shine.
I don't really like that UBs seem to be Pokemon after all. They are far too alien to the Pokemon world, and I have no idea how they can have types, etc. I guess I'll wait and see for the final verdict, but I wanted them to be uncatchable antagonists, and shiny forms make that seem unlikely.
So many Alola forms I was certain we were getting because they didn't appear in any trailers that are complete no-shows. namely Arbok, Dewgong, Dodrio, Victreebel.
All in all, I do like the majority, and there are some phenomenal designs. Even if there are some missed opportunities too. Obviously I would love if the things I was hoping for (namely those Alola forms) turn out to have just been excluded from the demo somehow I will be very happy, but I do not hold out much hope.