Alt/shift/ctrl for showing different skill bars
More skills available for each bars or ideally more customization.
Better keybind options in general
Ability to have a character target their self with offensive spells (plenty of reasons to do so)
Party wide actions: Putting all characters into stealth mode for example.
A clear buffs/debuffs list along with environmental info(standing in blood, water, etc.)
Better skill book availability at vendors