[1.2.303] New jobs confirmed

But they couldn't really do that without increasing the variables that store experience because of their current limitations.

It takes less effort to do this than it did to add Vicious' Hammer.
They have to compensate for scope creep by creating something bigger than the current world can take on, and then they either have rebalance everyone to make it work or make new classes that can.
Constant advancement is their only option for sustainability and classes that exceed level 200 are both doable, and the most obvious way of introducing a completely new paradigm that obsoletes everyone without actually taking away the accomplishments of the other classes or forcing them to suddenly be 1/2 way to max level instead of already there.