In the case in which alt-o causes a list of files to pop up, it would be a significant improvement if hitting 'o' again (while alt is still held down) would go to the next item in the list for me, so that I wouldn't have to move to the mouse or the arrow keys.
It would be even BETTER if releasing the alt key made the selection, so that I did not have to hit the enter key to pick a file.
In case any of that was unclear:
Keystrokes:
alt + O List comes up, Alt key remains down
O Selection moves down, wrapping to top, Alt key remains down
ALT Alt key is released, window switches to selected item.
Thanks for your time,
pj