I think Cameni once told me that normal maps (as well as specular) should be supported, though that was a very long time ago.
Regarding the new model, I like the overall design, but the polygons look a bit ... troublesome ... especially around the connector corridors. Was this converted from a four-point polygon model to a three-point? (Trying to remember if 3ds uses 3-point natively, rather than 4-point). Also thinking you should split the model in half, along the central axis going from right to left. Though it would add to the poly-count, it would clean up the inward-facing polygons a bit, and allow you to save UV space with mirroring, and gain a slightly higher color/normal map resolution as a result.
One of the biggest selling factors of this building's design is the fact that it ISN'T symmetrical. I'd almost suggest that the left portion be made slightly higher, even.
Also curious why you used cylindrical corridors rather than rectangular ones (just curious ... your version adds flavor, and it's something I probably wouldn't have thought of if I designed a similar building). I can totally see a road running between them, and how cool it would be to drive through
. ESPECIALLY if the building were more glass than concrete.