It would be nice to be able to swap between 'Right Button Spells' simply by pressing pre-assigned keys. On a related topic it would be nice to hotkey potions too.
<img src="/ubbthreads/images/graemlins/suspicion.gif" alt="" /> You
can assign hotkeys to select spells, as well as to use potions (at least the ones that show up in the potion bar). Character selection can also be done by hotkey.