I'm all for a simple, easy to understand system, but if it were easy to make one that hits all the right notes Larian wouldn't need to discuss this every time. You want something simple, flavourful and intuitive, as well as something that lets players specialise without forcing them down a one track road. Increasingly I'm of the opinion it's better to scrap the whole damn system and just have perk trees.
Is there a description of the system Larian are using somewhere or is it what the description in this thread describes?