I just came across this and love it.
Would it be difficult to add something where we could enter two points (airport identifiers or city names or xxx) and then it would overlay a great circle line on the map?
And what about average wind over the course of that line?
Or time to travel at xxx speed with the given winds?
I am trying to plan a flight around the world and the winds aloft are a big deal on the longer legs. Pago Pago to Hilo, Hawaii and then from Hilo to Santa Barbara.
My ideal scenario would be to enter NSTU (pago pago) and PHTO (hilo, HI) and then a given airspeed over that route (175 knots true) at 16,000. And then get data about the winds along that routing.