Please read about Physical Levels and Removing them.

[Reika]

Well, that would kinda collide with the " you are a character, not a job" ideology?
I mean, you already have a lot of skills from other classes, so you are overpowered anyways.Compared to someone who just started brand new.
Why not instead let you customize your character fully?Or at least to a degree when the impact at lv 50 to move stats around is important and not minimal.

Yes but you cannot set all the skills from another class. There are still action points. At R1 you couldn't set more than maybe 4 skills that use AP