Don't know if this was suggested before so I'll apologize in advance...
Also if this is already in the game (I did not notice it) (sorry)
In SW2 I guess there were mages who used lightning spells, the flame spell and the poison spell...
I would love to see them randomly inflict a lightning blast and give the voltage effect to the enemies. Like the frequency of the spell can be tweaked as needed. It would make mages more useful I guess...