I agree to the fact that a lot of the UI has bad usability. To many clicks to achieve what you want (in some cases at least). I guess there is more than one way to improve this.

Melee and ranged buttons are more or less essential even if a simple click on the enemy attacks with the currently equipped weapon. To free the hotbars you could add a right click option on the button for battle maneuvers. Or make more visible hotbars. Im playing on a high resolution and those icons are still big. thers space for more.

everytime i see a new program, be it game or other i hope that the designers have not slept through most of the usability classes during studies smile.

I guess dish out ideas smile