That sky is infinitely better.
Looking good!
I would say that the bottom part of the building in the third screenshot looks a TAD plain. I would run some trim or something along the bottom to maybe spruce it up a bit.
I'm not worried about a building being a TAD plain, you
can over do these things. I'll probably add a pipe running up the front, on the left of the building in the for ground, but for a building that
is the final choke of the map i don't want to overdo the detail in an area that'll see a lot of combat. A trim will be largely unnecassery. Just something to perhaps break up the horizontal monotony or the hard line at the base of the structure.
I will be adding more detail to the structure on the right though, which'll help move the eye away from isolated details like this.