My wish list would include
SARTIME reminder.
Flight and duty time app that woould interface with DFT8 which seems to be the most common flight and duty time program.
A logbook..
Maybe even weight and ballance program and performance charts integreated into Oz runways.
A proper flight planner, similar to champaigne that would link into Naips.
I doubt there would be any softwere available where the developers are in such real time contact with the end users. Great to see.