Bleh, forget subclasses. I want class evolution. Eventually, when they reach a certain level, they would "evolve" their class into something more advanced. This would give them access to new skills, however, they would have to do a quest to search for a master of that class. This would also raise some of their primary statistics, such as strength.
Warriors can evolve into Fighters, Ninjas, or Samurai
Barbarians can evolve into Fighters or Berserkers
Thieves can evolve into Ninjas, Treasure Hunters (Thieves more concentrated at finding/setting/removing traps in dungeon), or master thieves.
Sorcerers can evolve into Black Mages, Red Mages, or White Mages
Priests can evolve into White Mages, Summoners, or Time Mages.
This is just random things I put together...
Obviously this wouldn't be implemented, but it's fun to make up stuff.
