I don't know how much credit this thread is gonna take, maybe I played Fable too much but here's the idea.
Some magic skills are hard to skill up (Enhancing magic comes to mind, but healing magic too if you can't go mess up with undeads), and so I thought why not get the School of Magic in Windurst to actually work and accept sign ups from players? I think it would be a good exploit to get higher skill up rates, or maybe there could be some trials that would award you with hard-to-obtain magic scrolls (like quest-able scrolls you can no longer quest, or rare drops scrolls), making them Ex so that RMTs can't abuse of it.
I know it sounds unnecessary but I think it would add some fun and also make Windurst the Academic City it's supposed to be by canon if you could see a lot of mages around there going to study new spells or blood pacts.
BLUs could get the same treatment by having special training in the Colosseum to fight against certain enemies to obtain their spells (maybe the lv91-99 ones?). I would really like to see an Immortals' Arena where BLUs can train together, maybe make BLU spells learn-able from player to player through PvP events in there (sorta like you could learn Kimahri's blue spells fighting against the other Ronso warriors in FFX). Wouldn't it be epic to have your blu friend be your spells mentor that way?
Let me know what do you think.