I think we again need to see how skills shake out in the end. If I can get a character or two to fill out that bottom bar with skills and these characters are still effective. I'll be happy. If I end the game with a character that's used 5-7 skills (no matter how high the various costs) I'll be a quite disappointed.
I don't think I need D:OS's 5 bars full of ten skills.. which I definitely managed to do.
Ended with 10 spells at the end of Chapter 1 (or Act 1 or whatever) with 28 int / 28 memory.