Agreed Hannes, I have issues with TG colors I pick either too dark or too bright over over saturated. I have to find the balance with each scene.. good call.
Dune the workflow I used might be a bit unorthodox but leaves room to easily go back and tighten up messes. I used the pro version of Google earth desktop which lets you save very large images of the terrain.
• Content aware in PS to remove the watermark and compass
• Auto traced in Illy with a limited color pallet, and just selected mass objects by their color and changed to R,G or B. Shadows were changed to black
I did have to scribble in some of the tree masks but all and all I think it just needs some masks cleaned and like Hannes said less saturated.
Regardless of the mask cleaning and less saturation, it's never going to shine like your post with the trains and tunnels. That was some really good work.