I think it is just too limited and unsorted. I would like to have it split between consumables, skills and spells. Right now the hotbar is a mess of all things you can do in a turn, which is pretty overwhelming. If you could also customize them and move them freely on the screen that would also help.
Otherwise it is fine, because it visualizes all the options that you have, which is good, since you need to use them, too.
