K Here is my idea
We still get EXp after lvl 200, as far as i know. So why not just allow us to spend a certain amount on a skill. Lets say 40 mil exp for example. So every 40 mil exp that you obtain past lvl 200 you can increase one Stat or skill. So if someone really want to gain 400 mil exp they could increase the one skill by 10 or 10 by one, etc ....
It is one way that we can increase our skills, if we want to get that much exp. He can't have it to low or someone could simply just gain exp and raise Str (EXample) to 1000. Doing this Caps would be removed of coarse