You want the same difficulty for ALL classes?
A GLD can soak up much more damage than a THM... so how do you balance a leve featuring wolves for those two?
If you are asking for all Leves to be equally difficult to all classes, then it would have to be achieved by making all classes more generic and able to handle all circumstances -- and nobody wants that.
No, I like the idea of some Leves being much more difficult for some classes than others. After the class re-balancing, I would like to see Leves become more tailored to specific fighting styles... or at least disciplines.
Also, many of the leves are about tactics... don't use TP moves on bombs, etc..