Okay, now I'm just getting greedy.
During a flight, it would be nice if the computer could automatically calculate the start of descent point based upon current altitude and next landing waypoint plus airplane profile. Maybe the descent point could be a "soft" waypoint
This feature could be extremely handy during an emergency situation. Perhaps it could show airports within reachable distance as a "cone of safety" as others have requested previously and assume a worst-case engine out situation.
I don't know if it would be practical to include terrain and weather considerations as that might take more horsepower than some Android units have.