I'm posting Metropolis urban map pack! I've changed idea a bit, and instead of going into this dull dystopian grey look, I've made it look more futuristic and sci-fi instead focusing on those cold blue lights. Thanks for suggestion Oleksandr! I think this version looks much more interesting and eye-catching.
As for the layout, my attempt here was to add different levels to the city in the form of those artificially looking metal square-levels, a lot of buildings were placed on top of. In the future, I would like to try expanding the city-scape variety and make a biome similar to one of those mega-polis planetscapes like for example Coruscant from Star Wars. It's possibly a bit too high sci-fi, but I think it would be a map pack really interesting to use. For next few maps, I'll be going back to some more natural biomes however!