::edit:: Signed !!
I can see them developing a CDMA Diamond Faceted back, if there is a demand, and like someone previously said, im all for more choices aswell.
One can be a casual stock grey for everyday to day, and the Black glossy finish back for formal attire, and perhaps even a soft finish diamond faceted cover for whenever the mood strikes you, I'd buy an HTC branded Backplate pack
i mean they are adding diamonds around the camera in Germany with an in-box voucher in November,2008 and even offering an all white diamond overseas
http://www.pimpmydiamond.nl/
they can surely do this for the United States of America!