Absolutedly yes !
Theres little use having that multitude of spells if you lack the patience to go over the menu all the time selecting the one you want.... and if you use spells, 9 slots is too little to just put favorite spells and potions.
I didn't really get why someone would vote no for that. The lines are there, you don't really have to use it.
I don't play FPS games for one reason, cause I lack dexterity and just can't move my fingers that quick
I have an idea about that: the main shortcut bar can be visible this time, so you don't have to memorize it, and the alternative ones can be optionally extended above it or snapped to the side of the screen, like we see in many games nowadays. That way we can still use the mouse. One of the best things i liked about Two Worlds 2.
But hey, if it works for everyone else then throw it in aye, we can use it or not.
Then help us all and vote yes