Hello. Congratulations. This is the best weather forecast I've used. Suggestion: As a pilot of offshore industry I missed the possibility to create user waypoints and polygonal areas (areas that concentrate lots of oil rigs) to use as my favorities places to be displayed on the map.
I agree the app is great for me as a pilot.
Also just some suggestions for improvements:
Even if the favorites can be used as waypoints and a route can be defined between them, displayed and saved, it will help a lot already.
A function to zoom to fit the route to the screen size, will be the cherry on the cake.
If you then really want to make it the best aviation app ever, look at the 'Gramet Aero' meteogram of 'ogimet.com' and provide a similar route display as an additional option to your current detailed time based meteogram for a specific position.