It's completely unnecessary as Abyssea already changed the nature of experience point gain. All this does is make it harder on any trials you want to complete as I'm assuming by this meaning you can potentially go to 0 exp gain if your weapon or gear is too high, even if it's a macro swap. And some trials don't have alternative locations, especially doing Relic+2 augmented in Dynamis. Also removes the fun of completing Fields of Valor/Grounds of Valor pages while skilling up, etc. because a piece of your gear might change your level to the point of too weak.
Just seems like a completely unnecessary change to me.