So I thought I'd ask what kind of party NPC you'd like to see added to the game, keeping well within the appropriate professions, skills, spells, and levels?
Personally, I'd enjoy seeing a Wild Mage, young and perhaps a bit schizo, prone to extremes of mood; lamenting his/her ability to control his spells, very insecure at the beginning, having been tossed out of an abusive, uncaring community that had no use for him/her. Eventually, of course, the mutually supportive adventuring unit and the necessity to grow (or die) in the face of common enemies would shore up their confidence, and produce a slightly less shaky, more encouraged and successful figure, over time.
Your own wishes?