Honestly I don't even like, that the separated social skills from the other skills, therefore taking the freedom of allocating more points into non-combat skills if that is what you would like to do. So splitting even more into skilltree-points and combat-point would be even less of my taste.
And I'm repeating myself but both attributes and skills feel pretty basic in what you gain for investing. It's a hefty downgrade from what we had in DOS1, so I really hope, they will put more effort into those. But I don't think it has to be as complicated as Angelius suggestion.
I'm not often Stabbeys opinion, but valueing traits by the time you spend playing with them seems a bit odd. This is only usefull if a trait helps you accumulate 'saving', like 'The Pawn' or 'Far-out-man' who can save you AP during fight or Warlord with can help you can additional AP during fight. But even than it just something that makes it more convenient and speeds up a fight. Because to you can't take saved AP over into the next fight. The only thing that really would pay off if you took it early, would be something that makes buying and selling easier and therefore you help gathering money, because money is a resilient resource. Valueing with the time playing with it, is more something for games like Age of Wonders or Stellaris, where you have more resource management involved.