[Rendar]

Let's use something like. (Highest Base Stat)/15+5+Level/10. This way it hits mages and lowers some of their "I HAVE EVERY ELEMENT EVER HAHAHAHAHA" while also buffing non-will users into decent viability. I know that Quinn, at 77 base celerity, would have... 5+5+6 skill slots instead of 7+5+6.

Heck, you could even use (Highest Base Stat)/20+5+Level/10. That still gives, at least, 11 skill slots at level 60. With the possibility of at most, 4 more. At worst, 1 more.