Ok, enough kerosene (flames) for one day:
Some helpful suggestions would be to add curbs, lamp posts, perhaps boxes (representing air conditioner/heater), an antenna or two, doorways (without actually being able to go through them), maybe a lower building or two (like a corner store or something.) After you make all that, skin it all with that Matrix texture. Also, you could make one or two semitransparent boxes, like curtains almost (long and tall, but thin, boxes that would perhaps divide the map in half, that you could walk through,) cross-sectioning the map, with that matrix texture on them, it might have a cool effect.
Whew what a mouthful.
For the texture you could motion blur the lines downward somewhat, and vary the brightness of some of the columbs to create a more random effect. For the sky, it could probably the matrix-texture again, only bigger and more varied.
And another thing... would it be possible to be able to make a button on the map that changed textures on the map? And is it possible to make animated textures (****atexturewiththatmatrixtextscrollingdownwouldlookSIK *HEAVE*)
*pant* *pant* *pant*
whew, another mouthful.