more of the same
I'm sure there already is a thread somewhere about these but I personally really like Demon Summoner and some kind of Mercenary types, woudnt it be nice forcing Diablos own against him. Also there's always some one in it just for the money, get the job done no matter the cost in anyway possible, the (in)fam(y)e never hurt either.
Demon summoner could go atleast two ways, summoning and turning oneself more into a demon, maybe some cool hellfire spells too.
And the Soldier of Fortune would be something of a jack-of-all-trades, bard but not so happy-go-lucky. Melee, ranged and maybe traps skilltrees.
anyways, just have to wait and see and hope the game is as great as D1 when it came out.