I'm finishing up the work on another urban map pack - Industrial City. What I wanted from this map pack, is to give it some of those old RTS games vibes you could see in player/computer bases.
I was thinking about urbanizing the area even more, by giving it a concrete background, but after some thought and checking out older map packs including cities, I've decided a dirt background would be a good break from those mega-cities, so you can use it as a smaller scale settlement.
I'll be finishing up the biome in next few days.