Hey! A lot of fandoms on your list caught my eye:

Pokemon (I've played all the games)
Marvel/DC comics (Do the movies count? I have trouble keeping up with the convoluted comic canon.)
Avatar/Korra (Yes please) 
Harry Potter (Perhaps not Hogwarts? Another school in another country?)
Hunger Games (I have a plot idea!)
X-men (The movies I've seen, as well as a few of the cartoon iterations.)
Divergent (Read first book, seen first movie.)
Avengers (Movie version.)

I've been craving my HG plot a while now. Drop me a PM if you want to hear it... I might lose the thread.