Well, I have started working on building #1 and in the priming/basecoat stage I have noted a few flaws I thought I should pass along. I've also taken the precaution of calling this "Update #1" if things continue to pop up on this build.
Let me be clear up front - despite these flaws I still think these are freaking awesome buildings!
First up, there is some kind of wave in the rooftop fencing. Note how the line of the barrier moves away from the roof edge.