Bishop is a church ranking, so that wouldn't work. However, the prefix arch would. Say an ArchMage ... anyone who is a fan of fantasy novels knows that an ArchMage is the creme of the crop.
We could possibly make the transition name when your in the 50's maybe like Cardinal Wizard, and when you reach level 60 your title could be "Preeminent ___" and have the type of wizard you are, i.e for fire it'd be Preeminent Pyromancer. For those of you who don't know what Preeminent means, it means superior/ important. :)
Bishop is a church ranking, so that wouldn't work. However, the prefix arch would. Say an ArchMage ... anyone who is a fan of fantasy novels knows that an ArchMage is the creme of the crop.
That's a cool idea. It could also be something like Archconjuer or Archsorcerer.