I definitely WOULD NOT want 3 bars on screen at all times or 30 buttons at the bottom as some people have requested.
Moddable to preference would be nice, yes, but how feasible would that be? It can be pretty daunting on UI design, it's not that easy.
So hard that most MMO since Lineage 2 did it. That was 10 years ago. I was still studying back then.
Very daunting? Liking the game is fine, but pointing out the flaw and recommending solution is met with irrational hostility.
Hey, try playing a Ranger and imagine all those consumable arrows in combat on top of your other skill sets. A
ll of you espousing the real estate protection against hotbar has not a single convincing argument besides 'I use less skills therefore I am right.'
If this game actually had a mechanical limiting feature like Guild Wars 2 where ability is limited to 6 at a time, then there is a point to a single hotbar.
As such, there is absolutely NONE.