If you mean a wheel inside of the wheel spining. I have thought about that, may try to retro-fit some spinning gobo's onto this or else have them switched in front of this. I have a few old martin 1220 around.
Also have a couple rotary solenoid to use for a quick flip in and out, but not spinning.
The sweet part is drlava coded up some magic in LSX for me to control a microUSB and also the DMX. So I can have TTL and DMX. I slave a LSX timeline to the HD24 and can use it to turn in any effects or add another scanner head all in perfect time with the ADAT everytime. I convert the ADAT sync, to MidiTime code. Push play and i'll have beam tables, lumia, scan effects etc all taken care of.
http://www.youtube.com/watch?v=1cZ1WsHxfNA