I like your cityscape. Where did those models come from? O0
Dropzone Commander Cityscape. About $40 for 20 glossy cardboard buildings and enough 1' x 1' double-sided cardboard street tiles to cover a 4' x 6' table. We used 4' x 5'.
If you don't glue the roofs in, you can unfold them for storage. I could put the whole thing in an under-the-bed box no problem -- and that includes the homemade cardboard "X" supports I made for each building. I could cover any roof with metal mechs and not have a structural "malfunction."
We use felt underneath to keep the street tiles from sliding, though it's easy to nudge a building. And the scale is a bit off, 10mm, but that's not a deal breaker for me.