Suggestion for Karma
I had an idea: Make Karma's passive proc on large/epic monsters. It would have almost no effect on regular (support or mid) Karma, but it might open up the possibility of playing her as a jungler. If she could ult-W more frequently, she might have the sustain to jungle effectively.
This is just a thought, but I would appreciate discussion (maybe even a red post, if I'm lucky - RiotRepertoir has been really active on the boards.)