I really like this change.
I agree with what Saito said. This obviously needs testing but i think the new system does sound light enough to work eventually for most people (i have the feeling it won't feel that punishing than it is in other games like PoE or Pathfinder). And if many people are against it, Larian can always tie it to difficulty, obviously.
But i cannot say how glad I am that they are experimenting with this, this can add flavour to the game without being annoying, if its balanced properly.
Cant wait to test it next week.