I know the spell contest is going, but there are a LOT of missing realms of magic IMHO, or realms with only one spell or two.   Here are some to seed ideas:

Air, Earth, Water, Fire   (these are there)
Animal (Summoning?)
Body Control
Communication and Empathy  (some in game now)
Enchantment  (some in game now)
Food (some in game now)
Gate
Healing (some in game now)
Illusion
Knowledge
Light and Darkness
Making and Breaking
Mind Control (some in game now)
Movement  (some in game now)
Necromantic
Plant
Protection and Warning  (some in game now)
Sound
Transmutation  ( I really would like to see a Polymorph into Sheep spell!)
Weather

I'd rather see the spellbook organized in such a fashion with Tabs --it's currently just really jumbled!