Well it made the shadow maps buggy as fuck as well, i think the old clouds looked alot better, the new ones
just look like badly paint brushed gray paint overs, and i don't see any bigger performance improvements on my gtx 550, the only the things they fixed was the holes in the sky other than that they broke the shadows quite horribly.
Sky is not pretty and neither is the over exposed trees and mountain textures, the small rocks and wood piles are the only textures that look good.
I don't agree with you. I think the new sky is way better than the old one, especially with moon phases.
But this really isn't the matter. The matter is: MANY people saw a boost on their FPS with the new sky. Maybe you didn't (I also didn't, but FPS was never an issue here, so it stayed the same), but lots of people did, and that was the main purpose of the addition of the new sky.