This makes them much more vulnerable to attacks. 3D rendered versus bitmap. Compare the weapons of Doom and Quake. Doom weapons are bitmaps, and have very high image quality. They just don't look as good.
Many units look the same.
The same goes for Stumpy and Flash. 3D texture-map rendering loses quality, so minor details are often lost. This may cease to be when computers are better able to handle increasingly complex rendering, or when TA supports 3D accelerator cards. Names versus descriptions. In TA, though, the wireframe of the structure appears, glowing.