Cloud tech in the game is good, but it was better awhile ago, in terms of visual changes when it came to lighting, and the clouds looked like clouds even when they were scattered a little bit. At the moment, light cloud cover looks like splotches of white smudges in the sky, and not clouds. It used to look like this...

http://images.eurogamer.net/assets/articles//a/1/3/8/4/3/2/1/Arma3_screeenshot_EGcz_04.jpg.jpg

It needs to go back to that quality.