I submit these ideas to your attention for future versions (or not if you think they arer not worth the work to develop).
In the wheater routing, Add an intermediate point to pass through between start and finish point. (would help could help tracing routes close to "ice doors")
Add a "auto save" of the .nav file every xx minutes. (helpfull for those having an old overloaded computer and forgetting to save often)
Reload automaticaly polar files and winds when restarting / reloading .nav file (just more comfortable)
In the scheduler, add an option to send the schedule to the smartphone ( for those who are not in front of their computers
) --- For this one I'm Joking.
Merry christmas and happy new year...