I'll make my list using Entermaid's concept:
Love:
1: Litten - We've been waiting for a fire cat for too long. Well, I guess there's Litleo, but its evolution disappointed me. Besides, Litten has those fierce looks that make you not want to mess with it, and its color scheme suggests that it'll gain the Dark type upon evolution.
2: Pikipek - It looks like it could evolve into a badass, like Staraptor or Talonflame.
3: Mimikyu - Love the type combination and the Pikachu outfit. But will it be just as loveable without the outfit?
4: Mudsdale - Mighty design, interesting ability, so much weight... This thing has potential to become an awesome badass.
5: Salandit - Love the design and typing, and the ability is nothing to sneeze at. As much as I'd love to use it, I'm with team Litten, and I don't like having 2 or more Fire types on my team. Maybe I could buy both games, pick Litten in one game, Rowlet in another, and put Salandit in my Rowlet team.
6: The Vikavolt line (minus Charjabug) - This thing might become the most badass early Bug-type ever! I hope they give it a decent Attack stat, to avoid competition from Galvantula. Although if I want to use it, I'll have to deal with Charjabug. Hopefully it'll be worth it.
7: Bewear - If this cutie is so strong, then how strong will its possible evolution be? Maybe as strong as Rampardos or something?
8: Komala - I'm very interested in its ability. If it gets an evolution with good stats and a good secondary typing, I may take it all the way to the Elite Four.
Like:
9: Rowlet - Good to see a new owl, and I like how it can turn its head 180 degrees without breaking its neck or something. And even though we've seen its typing a few times before, it does have potential to become a good, non-Uber Grass-Flying type. Definitely my second choice for my Gen 7 starter.
10: Togedemaru - Even though it's a Pikaclone, it does look pretty interesting. If it gets decent stats, it gets a higher chance to be on my team.
11: Comfey - I'm very interested in its new ability, Triage. Hopefully, it'll also work for moves like Giga Drain. Also hope Comfey will get a good evolution.
12: Bruxish - While it looks pretty weird, it's not that ugly, and it does have a very intriguing ability.
13: Yungoos - It does have an interesting new ability, but since it'll be available early on, it's possible Game Freak will give its evolution bad stats.
14: Drampa - While it doesn't look as good as the other pseudo-legends, it's not that bad, and it does have some interesting abilities.
Iffy:
15: Wimpod - I like its design and typing, but I'm not fond of its ability. I don't think I'll use it unless it gets a secondary ability, or gets an evolution with a different ability.
16: Bounsweet - While it's pretty cute, I don't like its design that much conpared to many other Grass types, and I don't have high hopes for its evolution.
Legendaries (Yes, I'll categorize them separately, because I don't really like using those)
17: Tapu Koko - Perhaps the most badass looking legendary of Gen 7. Also, it looks like they could give it OU-esque stats, like the genies from Gen 5.
18: Lunala - Very interesting design. Although I was hoping it'd become Ghost/Fairy or Dark/Fairy or something.
19: Solgaleo - Also a pretty cool design, but looks like it should've been a Fire type.
20: Magearna - While it has a nice design, I'm not too keen on using event legendaries. Especially Ubers.
Not fond of:
21: Charjabug - What is this thing? A mutant battery on crack or something?
22: Popplio - I really don't like those ears. I'd rather use the Seel line than this thing.
23: Rockruff - It looks too much like a real dog to me, and I'm not a dog person.
24: Cutiefly - While its type combination is pretty interesting, I really detest flies in real life. Also, so many people here seem so fond of it and I just don't get it.
