1. Indicate what menu element is selected right now (with color?) when multiple are on screen it's hard to figure out which is active..
2. Allow right/left arrows to work like up/down, but 10x faster. (or shift+arrow=+10/ctrl+arrow=+100 or some thing like that)
3. Enter Button is better for confirming than starting chat. Escape seems to cancel most menus already.
3. Make the TAB key usable (to change between menus, especially in the options menu)
4. What about drop-down menus? (not important
5. New round messages should also have 'ok' button for mouse fetishists
6. It is confusing, when you have close buttons for one menu, only escape for the other and right-mouseclick for the next. - Such is the case - Unify, make all three work for everything!