Hmmm....... setting aside the necessity to redefine tiers, whichd eoends on opinion and ivnestment in meta-parts of a game, these dont seem bad.

As far as I can see at the moment, the system overall should work very well, but it needs a very good/clearly defined seperation (with loads of examples for some classes, say bard) between the Power Levels. Versatility and Flexibility are easier in that regard.

Afterthought:
It might also be good to seperate them into 2 tables, one for up to, the other for above Level 10.