We all farm specific bosses to get high level gear...I had the idea that it might be fun to have some bosses drop recipes for gear (or even other things like houses or something)...this might get us farming different bosses, or, at least, give the opportunity for new, better gear at a given level.
I enjoy crafting, but find that by farming at a lower world I can get better gear than I can buy from recipe sellers in the next (or even next two) worlds. Maybe it would be activity-specific gear (e.g., fishing or gardening) or something like that.