I agree, really the toolbar is highly insufficient.
Some people said they can't even fill 1 bar, that could be true in some cases but as i play, 2 lone wolves, 1 mage, i get all mage skills for 1 person from all schools and i do use a lot of them during 1 fight, so it gets very annoying to constantly scroll back and forth between bars for skills and for food (eventually).
There should be a way to add more bars on the screen.
