I'd love the ability to have hotbar sets, and then be able to switch between those sets, thus changing what hotbars are visible on the screen.
That way, I could only have a few hotbars active on my screen at once - a couple of 'combat' hotbars containing my weapon sets and combat skills, or hit a hotkey and have those be replaced with my spell hotbars, hit another hotkey and those vanish and now I'm looking at my equipment hotbars, etc, etc. I can have a much smaller area of my screen dedicated to hotbars, as I only need to allow for a max of 5 visible, instead of all 12, for example.
Obviously, the number of hotbars in each set will change with class and/or playstyle, so players will need to be able to manually assign a hotbar into a given hotbar set.
I'd suggest keeping the hotkeys for the buttons on the hotbars static, that they don't change as the visible hotbars change - I'd like to be able to be looking at a different set of hotbars on my cleric while still using the 1-0 keys to cast spells on hotbar 1 (which would not be visible), for example.
Zad