I am a glider pilot and love making gloders in the game. However I have encountered some difficulties in staying in flight as there is no lift around.
I think and others may as well, that's it would be a great idea to have thermals, ridge lift, wave lift and I think it would be nice to have an option to change wind e.g. Intensity, direction all that great stuff.

I think it would be cool if you could manually change the speed of the craft into knots(knts), kilometres per hour (kph)