As I understand it the reason that you can't reset attribute points is because they also affect dialogue choices and therefore story branches in the game. So if you were to allow players to reallocate then some would just max-min for combat and redistribute for their preferred dialogues.
I think one of the Devs (can't remember if it was Sasko or Weber) explained that it would be game breaking because of the way the engine keeps track of your options and decisions.
I think one of the Devs (can't remember if it was Sasko or Weber) explained that it would be game breaking because of the way the engine keeps track of your options and decisions.