If you don't intend to do ultra high end PvP - then consider adding a warlock. The soulstone alone would be amazing - plus a VW tank = money.

And summons..... and imp stam buff..... decent aoes but not as many PbAoEs (ones that emanate out from your character).

It would be pretty complex to control but I imagine with practice it would be doable.

Not sure if it has as much appeal for PvP though.