Maybe, at some point, there could be a separate download (for purchase, of course) of more detailed/elaborate textures for cards that can handle them. That's something that would take up lots of space if included in the program itself. Like the separate ones on the second Unreal Tournament cd. (S3TC/texture compression?)
Does this seem feasible, aside from the size of the download, and the fact that it won't fit on a floppy?