Based on this:
What spell effects make someone helpless? The hold spells certainly, maybe webbed & commanded enemies.. but does it also work (for the 1st hit at least) on hypnotised & fascinated enemies? If so, I can see this being a serious boon for groups (eg. permadeath) that like to take a more strategic, methodical approach: drop some CC on a group then follow it up with a nice AoE for big damage boosts. An enchanter archmage & a sorcerer working together could romp through a lot of stuff (like they can now, admittedly) but with almost negligible SP costs.