I also am not enthusiatic about these suggestions. I play the game to pretend that I'm a fighter pilot, not to look at scenery (I can go outside to do that). I even dislike dawn/dusk. Initially it is pretty, but this wears off after a few sessions. Then all that's left is the inability to see anything, and I log off.
Instead, I would like HTC to concentrate on producing more planes. More realistic flight models are also appreciated, to the extent that they allow interesting dissimilar-type dogfights.