I feel like it is a great outline for the map so far IrocJeff, but if you want things to look a bit more complete you may want to consider adding more "noise"/"detail" to the basic stuff you got outlined so far. eg: more detailed textures, additional shaders, models, 'realistic' piping/electrical utilities etc... Right now it just looks a bit incomplete for it, if you want inspiration try looking at what Szico does with his maps.