Anima was doing the game design of PS2, heh, in those times we thought we had both time to do several things at once...then reality hit us
Anyways the short answer is that I don't know: the main reason is that a lot depends if Anima manages to write the new RPG Framework in time.
So the rules will depend on the framework I've available, since the new one would have several interesting new features, like "casting time" and possibility of having "interrupt" and such. So a whole different world vs the existing Loren/SOW/QoT framework
In the original doc though, I remember each class was more specialized, so one offensive, one defensive, etc. I think for the psionics the best would be a sort of support class, like a bard in a fantasy game. But this is just an idea for now