Have a limit to number of saves when not in overwrite mode. Perhaps three saves and overwrite. Just one save is sometimes too close to a crash (ugh) to avoid it. Without overwrite the load file ...
Provide a choice for Autosaver to start with Flight Sim startup. I often forget to start it.
Add a way to save the flight with some flight parameters in the description. Parameters such as: Time, Lat/Long, heading, altitude, knots and much more...
Customize the combobox intervals by an XML config file.
Add a custom description for a saved flight. Indicate a single description in the software and it'll be replicated for each saving.