The perfect system for me would be having the current hotbar (extendable to the old size) on which we could have the most commonly used things and also have buttons to click for grouped things (one for spells, one for potions, etc.) These buttons should then have the option to turn into pinnable hotbars for those of us who want everything on the screen all the time. Ideally they should be able to be resized and pinned in different places around the screen. For people that don't like hotbars, they could use the option to open the spells button and have everything there instead, perhaps like a spellbook which some people seem to want. Would be similar for things like potions and whatever else.
An example of my ideal setup, which I expect some of you to have nightmares about
Spellcaster
Main hotbar: Top row most used damage spells, bottom row most used utility spells.
Second hotbar: Potions (probably only opened to allow for 2-4 slots) Pinned vertically to right side of screen
Third hotbar: Pinned under potions bar. and also vertical. Special class actions and other sometimes useful stuff that isn't a spell.
Fourth hotbar: Scrolls, probably pinned vertically next to second and third
All other hotbars would be spells rarely used and grouped by level. Probably these would be pinned vertically and off to the side. Some of these may not be on the hotbars since I play like a proper DnD game and don't rest every 5 minutes, and because of this I hold back on using super powerful spells until absolutely needed. Fiddling around opening different button popups to get to these wouldn't be as much of an issue.
Would be less hotbars playing a partial caster or martial, but would still have one for ranged stuff, one for melee, one for potions and one for most used spells if applicable.
