I hope this will be sorted soon, summoning a crowd of monsters is my favourite tactic against enemies. I'd rather be able to summon a host of weaker imps that one big mean demon, a bit like tossing a hornets nest into a crowd of enemies: They're not big, but they sure stirr things up! :-)
I would love to have a whole skill set based on summoning, not neccearily necromancer though. Elementalist, maybe? :-)