Solmyr, Demeer, and Aislin are cheaters (and/or) kamikazes; do the rest have a right to exist?

Believe me, if you get a chance to acquire Tant, wisdom will be the next best thing after necromancy. But what's the point of this change? It only adds more unpredictability because these heroes are unlikely to be chosen as main characters. As for me, it doesn't really make sense; it strengthens the position of non-mages, but primarily fighters.