Missing Segments

How about a facility whereby if you are viewing a flight track on the web - say transoceanic - that has missing segments, that there be a facility to upload a GPS log if you were on the flight and recorded one (nema, GPX or KML format)

FA would verify that the uploaded log is reasonable (corresponds with ground tracked positions, doesn’t veer to an unlikely path or height, etc) then uses it to fill in holes in the historic data.

Later maybe even come up with a smartphone app to collect the data and upload it