Well, if i'm the only one, I guess I should start testing same-box multiboxing as well, at least in a limited scope. (I'll get on that this weekend - hehe)

For me personally, my wishlist would be in this priority

1) Hotkey for toggling broadcasting on and off. Mousing over to the button is easy enough since I've got mojo on my second monitor, but if it was in the background, it would be a PITA.
2) Keymaps - at least in a basic form. Like a "do not pass" list or something - I'm playing toons solo more and more these days, and having to constantly bind and unbind movement keys it driving me nuts.
3) Mojo disconnect option. Sure, I can CLOSE mojo right now to kill broadcasting to that PC, but it would be nice if I could do it from within mojo so "stop accepting inputs from another mojo" type of this.

I'm use Input Director for my software KVM solution - so the "mouse over" features of mojo are very low on my personal priority list - in fact, they are no needed at all for "single PC" multiboxers.