As a suggestion regarding the riggers remote, how about a box that plugs into the stage end of the dmx line, so you don't need to run out another cable, and gives you up/down buttons for your preset focus palletes, and encoders to control pan and tilt, so you can easily tweak critical positions on stage.
Actually, thinking about that it would probably contravene DMX standards, and you don't want to go down the Pulsar route with that...
So, as the frog is mostly used in small venues how about an IR or RF system, so no cables at all!