General RAAM seems like an odd pick, to me. I know they probably wanted a Gears rep, but RAAM doesn't seem like he'd translate all that well... Or really be iconic or important enough to people who played the games to really make sense to use him as a representative. Skorge seems like a much more fitting choice, but maybe IG sees a lot of potential in the Kryll manipulation that RAAM had going on.
Then again, I was also really skeptical about the Arbiter, too, and it seems they make a pretty interesting moveset and play style for him in the game.
I'm really interested in Mira, because I know there's been a vampire character concept that was canceled but
referenced in Killer Instinct 2's data, and after the reveal (and probably release), I'd really like to hear what Ken Lobb has to say about them in relation to the canceled vampire character.
I still would really like to see a character from Phantom Dust, if we're getting more guest characters. The sheer breadth of abilities, and their styles, would translate really well into a fighting game.