Wyll - I'm looking at Bard for him too, or Paladin. Either Lore for the spells, or Vengeance to kill all those filthy, disgusting GAWBLINS 31,52% more effectively!
I'm too lazy to respec, I'd multiclass him the moment once he is a available, hence he retains his 2 lvls of demonic possession.
This is from the viewpoint of a Good party - Tav (a melee Bard), unchanged Karlak and Gale - hence i"m eying Wyll as the 2nd healer ( I simply MUST have two healers).
Not optimal, but I don't care.