A fan of the site is starting his own blog. wiztips Check it out. He's got some good stuff.
Some random wizard ideas:
I think school pets should be available to ride...
Kracken or Stormzilla
Fire Dragon or Firezilla etc...
I also think there should be a crown shop that allows you to mutate cards to your school so you could make a Fire-Giant, Ice Dragon, Myth Lord etc.
I think that you should be able to spend 2 training points and learn a spell from another school that would employ your power pips. So learning by spending 1 training point things would work as they do and use a power pip as = 1 pip, but if you spend 2 training points to learn it, it should use your power pips as = 2 pips for that learned spell. (you would learn fewer spells that way but it would add a whole new dimension to dueling and questing)
Also I think there should be a new school (Technology). Technology would be the opposite of balance and use spells like robot-spiders, clockworks, fire-belly's etc.
If you have any cool ideas post them here or on wizard101mythology