I run the DIY Outernet receiver with a battery pack and it would be nice if there was a script or something running that would detect a button press via GPIO and have it enable and disable wifi to save on power when I'm just passively receiving data. I don't need a hotspot for 90% of the time it is running and it seems like a waste of power.
Basically, add code to detect a button press and tell people which GPIO on the C.H.I.P. to use for a wifi on/off switch. Or allow it to be configured by the user.