Gold for conversion seems like it would fairly useful (especially since you can find Goblins way before you get the 50 gold prep, and I dislike games that balance everything around the endgame). I don't know exactly how much gold is generated per map, but what about +1 XP per gold found, stacking, for 200 CP? It would make Black Market more useful, but you'd also have to be careful about when you pick gold up, but if you used it right it seems like it could be great near the end of a run.
I think rolling Tri-Sword back to +2 damage would be fine; that would put it more on-par with the Gnome/Whargarbl Wizard/Sorceror combo - that is, it would still be great, but you wouldn't immediately rush for Halfling Berserker/Warlord any time you know the boss won't be physical-resistant.
I'm fine with Humans right now, but there should be more items that give +Base Attack rather than +% (or make the existing ones better; bump Skullpicker up to +10 with a 50 Piety/2 max mana cost; possibly also increase the piety loss for casting spells).
I definitely wouldn't mind knocking Elves down to 60 CP to help casters be more useful (I also wouldn't mind another direct-damage spell, maybe an ice-based attack that does less damage than BURN but removes First Strike - in fact, a way to remove First Strike is a whole nother thread altogether I think