In regards to the 7th gen Pokémon, I dunno how I feel just yet. The starters have grown on me, but I still think Popplio needs bigger ears... Aside from the woodpecker (which is a bird so of course it's gonna be cute) I'm not really digging the E3 Pokémon. The mongoose/marten has Donald Trump's toupee for some reason doesn't appeal to me, and the bug just seems incredibly plain to me. But I will admit, the bug has a good opportunity to evolve into something neat (read: a may bug) so I'll keep my eyes peeled.
I like how even the standard Pokémon seem to have some sort of "backstory" to them--such as the mongoose/marten being brought in from another region to keep a certain other Pokémon's population under control--but that makes me wonder just how many new Pokémon will be in this region. There can't be a lot if they all have such backstories, right? I think XY had way too many old Pokémon, effectively overshadowing what few new ones there actually were. I didn't care for that, and I'd rather it not happen again.
But on the other hand, I like the theme of "ecosystem balance" (oh ho ho, there's that "e" word again!) they've got going on--not just conservation, because as we know now there are issues of overpopulation in Alola in addition to the Pokémon we know are based on endangered/extinct animals. I wonder just how far they'll take it (again posing the question of just how many new Pokémon there'll be).
So it's still pretty early for me to really have an opinion on gen 7's Pokémon. It's not fair to judge a small handful of Pokémon against the 100+ of any non-gen 6 generation. The stuff gen 7's got going on could turn out really nicely or be handled poorly at this rate; it's a complete toss-up as to which way it will go.