We used to have thick and dark stormcloud fronts, with no visibility except from point blank range inside the top clouds, and reduced light under the clouds.
I don't know if it was complaining (as night got), or bugs (I could often see far dots from within the clouds), but it's a shame to not have them anymore, as it is with night and a variety of terrain tiles.
Hopefuly HTC can do something about it... It may be time consuming, but at least it's not (as far as I can tell) a brain splitting issue like strat balancing or how to model new planes, or how to develop CT are.