Some other things that might be nice to help various schools of magic:
Paralyzing Fear: All fear spells you cast have a 20/40/60% chance to render mobs frozen in fear making them helpless even if they save. All failed saves result in this effect.
Endless Fear: A toggle that applies the phantasmal killer effect to all spells you cast 7/14/21% and uses your Illusion DC (instead of a static DC)
Arcane Aura: All creatures with 5 ft. of caster take a -5 saves penalty (Because we don't like getting close to mobs remember!)
Suicidal tendencies: Activate this ability to force all creature under your charm and domination effects to commit suicide. 70/80/90% effective. (could be some type of connection here to the "Sacrifice the Willing.")
The Spiders Hand: All spells you cast have a chance to spawn a web effect using your conjuration DC 7/14/21%
Gaze of the Medusa: Same as above but with Flesh to Stone.
Siphon: any target creatures currently effected by you crowd control spells or effects with lose 5% hp every 2 seconds.