You can just broadcast mouseclicks instead of turning on the master broadcast-everything key. For example, I have mine set up that when I press and hold TAB, it turns on mouse broadcast only, then when I release TAB it turns it back off. With it not being a toggle, I don't forget and leave it on. I still have a master broadcast key but I only use that to chat or login, or if I'm doing a quest where they are all driving a vehicle cannon or something.