More questions!
Would it be possible to break down the setup into individually less expensive components, like for example, just the GPS transceiver without the camera or HMD, but with the option to buy those later?
I bet that would make the system an easier sell for cheapos like me
Relaying orders to people marked on GPS with radios and compasses wouldn't be as fast or as cool as through waypoints on an HMD, but how much less expensive could it be?