Hotbar improvements seem a good idea - having a 2-key shortcut system (e.g. 3 then 5 for the fifth button in the 3rd toolbar) might be worth investigating.
My biggest request for now though is the ability to zoom out more - I'd like a similar exploration range to Divine Divinity (when run at 1920x1200 resolution) which is 1.5-2x what is currently permiited in D:OS. Or at least, make the zoom configurable/hackable.
A more ambitious addition would be the option of a first/third person perspective (as offered in Neverwinter Nights). This would be better for exploration and would give Larian a chance to add some glorious skyboxes.
