Ok, I've a few things to say about this.
Morelull
I love this cutie here, and I can't help but feel like it'll evolve into what would happen if Togekiss and Amoongus did a little fusion dance, so I'm actually pretty scared of it too. I mean, imagine Gen 4 Togekiss and the best competitive Amoongus you've seen and that's what I imagine. Also, 3 pounds for something that's barely even reaching a foot tall and is that skinny? Are the mushrooms all really that heavy?
Pyukumuku
As usual, when I saw the corocoro scans, I thought it looked bleh. Now seeing it in HD, I can't help but realize it's like a little slimy bunny from the sea! I imagine it'll evolve into a sea hare, possibly being a new Shellos/Gastrodon thing? Either way, I'm really looking forward to petting one of these little squishies! : 3
Wishiwashi
I saw a fakemon artist make an idea similar to this several times, where a fish pokemon becomes a school. Well, in his designs, it was via evolution and much more like Magnemite's line, but this I think I like more. It gives me a vibe reminiscent to that of Finneon, a tiny helpless little thing that just likes to swim around and look nice. As for that School form... I cannot - cannot - get over it's look! It's like the embodiment of the ocean itself is going to wreck everything with one apocalyptic Hydro Pump! Heck, I feel Hydro Pump doesn't fit enough... Sounds too weak... Hydro Eruption!! Yes!! Also, I'm a bit of a sucker for tiny pokemon turn giant, like Hoopa.
Alolan Marowak
I don't have much to say about it since I never was fond of Marowak much, but I must say, they did a good job on it's design! It definitely looks more ghostly and related to death! And I love how that black mark on it's head is actually from it rubbing the bone on it to light it. Also, I noticed it's slimmer... I wonder if that means it's faster with lower HP? Final thing is I love how it has bones on it's back.
Alolan Raichu
Finally, I feel like Raichu will finally be able to be used competitively once again if not for the first time! Yay! Plus, it's got that nice tan now and some freaking adorable ears! Honestly, my favorite part is the "maybe it ate too many sweet and fluffy round pancakes!" I'm hoping, if it gets a different hidden ability than regular Raichu, it gets Levitate.
Alolan Meowth
All I want to say is Glameow. But, I'm sure Alolan Persian will help me not see it as a clone of a future...past... something generation pokemon. (Seriously, does it still count as gen 1 or gen 7??)
Team Skull
Loving the designs so much! I can actually see these guys as a gang (which is what teams are known as in Japan) and, y'know, not trying to take over the world? I mean, when was the last time we had an evil team do something that doesn't involve the whole world? I'm sure these guys are gonna do something like "If Guzma can't be captain, we'll shut down the challenges and start our own thing where he can be on top!" And, by that I mean, I imagine them trying to shut down the challenges and start their own Alola League, maybe even overhearing about a legendary pokemon and stealing it or something. Well, actually, I oddly can't see these guys stealing as much as I can see them going all Jet Set Radio. Last thing about them I'm gonna say is that I love how they use different pokeballs for once! Grunts have Safari Balls and Plumeria has an Ultra Ball! Wondeful!