Would anyone be interested in a Relay Flight category? It appears this was discussed before but if we came up with a simple set of rules it could work.
Category is for two pilots only, must return home
Pilot 1 takes off and flies to the halfway point
Pilot 2 takes over halfway and flies to the destination
Ground crew at destination swaps out to a fresh battery
Pilot 2 takes off and flies halfway back
Pilot 1 takes over halfway and flies back home.
I think it makes sense if you limit it to two pilots only. If you use more than two it gets hard to establish a standard set of rules and becomes difficult to categorize. It could be under the "Special Challenges" list.