Edit: Finished reading the entire thread and noticed the suggestion has already been made. but still seems like something people want.

It is possible and somewhat simple but it would take a lot of work to add so don't hold your breath for that feature. The main slowdown would be the UI, the best way I can think would be to display a picture of a keyboard and you can click on keys to toggle whether or not they broadcast.
I don't think it needs to be so complex, though that would be very nice and intuitive. It could be a simple list of all the keys with a check box next to em.

Or even a text CFG file with all the keys and an = 1 for broadcast 0 for no broadcast. It may not be user friendly but i think anyone who is dual boxing has enough computer skills that they can edit a simple text file.



----------------------------------------------------------------
Original:

Awsome job Micah, your my hero!

Having finished showering you with praise, now I have a request or more accurately a suggestion.

would it be possible to create a button exception list for the broadcasting, or just to broadcast certain buttons. For example just broadcast WASD for movement but leave other hot keys unbroadcasted.

This way if I'm dual boxing a warrior and priest. I can have them move the same but if i hit my F hotkey, moused on my warriors screen, he will sunder and my priest wont hit whatever ability is bound to F on his screen.