Several UI features would really need accessibility settings, such as text size, UI scaling, XP bar location/size, dash counter location/size, HP & Mana location & display type such as displaying it in percentage and also having it around the cursor like in HoH1. Enemy & Imp outlines (not just when behind terrain) would also be immensely helpful.
The minimap settings are on the right track for this, and the pause menu/main menu contrast is also a good reference point. People with visual impairment will greatly appreciate it, right now it requires a great deal of squinting and eye-strain to identify items, stats, and read text.