I suppose Gengar wasn't such an obvious choice (like Charizard, Greninja, etc) yet it's still really predictable - but that's to be expected when doing a poll I guess. It wasn't a bit of a left-field choice like Suicune.
Good thing is that its animations look pretty cool, I particularly like its Lick attacks. I see Shadow Ball, Lick, maybe Shadow Sneak? Not sure on a few other attacks it uses.
Hopefully we hear more on other roster inclusions soon. If Hawlucha isn't in I'll be shocked and disappointed; it was made to star in this.