Thanks!
Perhaps I will add that later.
It is sort of possible to do already though with a bit of workaround, you can map the keyboard shortcuts to a button/switch on your transmitter with a program such as this:
Windows: http://joytokey.net/en/
Linux: http://www.lgdb.org/tool/antimicro
Mac: http://alternativeto.net/software/joytokey/?platform=mac
(The keyboard shortcut for the mode cycling is "L")