The solution is not to just make the hotbar bigger. The solution is to make menus available as they are needed like Solasta.
We really need to go past the old way system of UIs.
But why?
I dont quite understand why cant we simply have both.

As it was with spell levels ...
There was simple solution to allow people either give any spell level they want into hotbar (old system), or add there all at once with popup menu (new system) ... what was wrong about that?
Why do minority need to subject majority even in times, when all that is needed to satisfy both is adding something new, and JUST DONT REMOVE THE OLD ... :-/