its not to make it more complicated or simple. its just to shorten the gap between lvl 10-64 and 65-75 players. Make it more equal in a sense.

If someone wants to xp with a lvl 30 party; only has one job at 75 and nothing else leveled (except sj of course) they can cap themselves and be ready to go!

as for as exp and merit; IDK; if SE ever implements it; that would be up to them.