[Senna]

The problem I have with this is how abuse-able this will be for some classes. Of course you can fit a lot of skills and so on but this only promotes people to not build Skill any further than they've already not. You can say Skill for autohiters is that neglected step brother. As far as it goes, if Skills is needed, I'd suggest a threshold/bonus once you reach a certain amount of skill?

So let's say each time you hit +15 base skill, you gain an extra 1 slot? So adding around 50 base, you'd have a decent about to work with.

So 15 - bonus 1 extra slot
30 - Another bonus
45 - Another bonus and so on.

That or the easier route: passives and racial being slot-less. Of course this means some passives that has such effect will be affected but normally, classes with that passive always have slot problems.