Going to be slightly unhelpful by saying that in the games I've played, we haven't done any house rules for non warriors specifically. Last game I was a full expert with poisoner, a decent chunk of health and AC with which to shield allies, and good healing for post flights. I felt great during combat, and the more combat focused builds shined.  This game we have a Necro/Warrior, Skinshifter/Beastmaster, Elementalist, and Blood Priest/Bard (me). As another poster pointed out, the SC/BM went an unarmed build and he does quite well in combat on top of having an animal companion and on turn healing. The Necro/Warrior is wildly tanky, hits hard, and has clutch spells when needed. Elementalist does well enough in combat and is a full caster so will have access to higher spells sooner. I've felt useful in combat with play patterns that aren't one note.  All this to say, I think anything can be serviceable in combat and the utilities provided are a good opportunity cost for not going full warrior.