This idea may be "out there" but I thought it was worth posting, just to get some responses:
Turbine engines have a computerized remote starting system that can be run directly from the transmitter. Has anyone considered something similar for glow engines, even it's not completely controlled from the transmitter?
I was thinking of something along the lines of the Traxxas "EZ Start" used on the T-Maxx: A small (540-sized) electric motor connected to a the starter shaft through either a gear or a belt reduction, and a remote connection for the glow plug. All you'd have to do is bring a plug to the outside of the heli that you can connect a 7.2 volt stick pack to and the engine would turn over.
Another idea: Remove the one-way bearing from the starter shaft so that it is directly connection to the engine's crank shaft. After the electric motor turns over the engine, the engine continues to run the electric motor, converting it into a generator. Run the on-board electronics from the generator (with a voltage regulator) in parallel with a standard receiver pack and you could run all day without charging anything.
To take this one step further, it could be done completely from the transmitter by using a spare channel. The receiver pack could be used to start the engine, and then the starter motor charges the battery in-flight, just like how the alternator in your car works.
Bergen Intrepid Gasser x2