I must say that my first language is not English. So I apologize in advance.
The idea I propose is because I'm just bored senseless leveling up and forget the content that often have not even reach each expansion.
My proposal is based on a new dynamic where we stay at lvl 100. Instead of performing missions to gain levels, change to clean all the quest of a map for that we got a new skill or improve it (like WoD level perks).
Thus, in addition to new areas and history, I will have new skills to test in the old content remains the same difficulty.
What I mean is that they should stop thinking vertically and start thinking horizontally.
Broaden our possibilities of adventure, that is the purpose of an RPG. Not only level up to fulfill a requirement.
I know this idea will have its pros and cons, but we do not say lies, no longer makes sense to force us to climb 5, 10, 20 or even 50 levels where adventures are reduced to a new lore.
It's just a crazy idea. Maybe you have some better . ( Expose them ) . But the point is that since leveling up is pointless.