He's a strong possibility for a main or co-main or at least an alt. Goro is the front-runner for obvious reasons of sheer badassery (#punchwalk), but I've got plenty of interest in quite a few other characters like Ferra/Torr and Commando Kano, and Kotal is at the top of that list.
What type of player are you?
Well let's skip right to my mains since that should make it pretty self-explanatory:
MK9 Main Characters:
Shang Tsung, Quan Chi, Cage
IGAU Main Characters:
Bane, Grundy, Doomsday, Lex
USF4 Main Characters:
T Hawk, Hugo, Zangief
So basically heavy-hitting, gigantic, armored, grappler/brawler, get-in-that-ass types. Also a preference for evil personalities and set-up/gimmick-based gameplay.
What do you like about Kotal best?
See above, bc Kotal Kahn looks like he's all about dat life.^
What variation do you see yourselves using first/most?
Blood God & Sun God
How do you think he'll play?
Hopefully like Grundy with Bane-worthy damage buffs and an easier time dealing with jump-back/run-away nonsense (even if by healing himself to force them to come to him, which would actually be really tight). High hopes for this badass.