Ok, I have a new/improved proposal for the stat syteme. I would still split up combat and social skills because (I'm fully with Josh Sawyer here) you shouldn't try to bring P&P rules 1to1 to video games but instead you should try to find the best working system that offers the best gameplay in video games in respect of your focus there. And as Larian's focus is on combat AND on interaction/communication I still think a split would improve the system by large.
You should gain one stat point per level for either:
- strenght
- dexterity
- intelligence
- constitution
- speed
And another stat point per level for either:
- intimidation
- charming
- reasoning
I cut perception (because of the good comments above) and thievery (because thief abilites like pickpocketing and lockpicking should be active skills with basic/advanced stats in dexterity/speed and not stats themselves)
