Were you aware that you'll get even more options for the keys if you hold down one of the Mac modifier keys (Shift, Control, Option, Command) before you bring up the key select menu? You can even hold down multiple modifiers, such as Command and Option, before bringing up the menu, or all four if your fingers can cope. However, for some reason, it won't let you choose keys other than the function keys or the modifier keys, even when modifiers are depressed prior to opening the menu. I'd like to see the option of using keyboard combinations like Control+Shift+A or Command+Option+3 for Exposé. Obviously, keyboard shortcuts that use Option, Shift, or Option+Shift without another modifier will have to be excluded because those combinations already have characters assigned to them. For example, if I assigned Option+e to Exposé, I would no longer be able to type ´ very easily.