Better? I undid the Digital Optimizer (too sharp = noise?). Backed off on the saturation for a more natural look, but it might still be too much?

On the dust, I thought it was the window but it turned out to be a dirty circular polarizer. It doesn't get used much, and it appears I didn't clean it too well the last time. I used the Stamp Tool for the darker spots.

On the polarizer, it does work, because it went from gray skies to visible rainbow. So, I guess it was very faint to start.

Thanks for your input.