It certainly would be nice. As things stand those seriously weight conscious could fly at lighter weights using a 2s 800 ma lipoly with a diode to drop voltage to 5v. If they are still afraid of their itty bity gassers they could go back to glow where they had none of the multiple safety redundancies they insist on with gas.

Sorry, all of this has taken me back to the anal attitudes some people develop the moment they put a gas engine on something. For some reason they don't have the same safety concerns with a glow engine swinging a meat cleaver of any size. Fuel cut off at the throttle trim seems to be just fine with those. They can install and set up radios just fine in those but they become mindless and forget everything when they set up a radio in a gas powered plane.