They won't do it as BTO because it hasn't got that silly
miniport nonsense on it
How are you defining Apple branded, by the way? I don't
see Apple's name on the BTO 8800GT, for example.
As in they're sold by Apple and manufactured by Apple (or a direct Apple supplier). They're basically stock nVidia cards but with a BIOS and EFI written by (it would seem) Apple. Think of it like all the stock cards that third party PC manufacturers make. They're basically identical except they have a different sticker on the cooling unit. If Apple were to have a GTX 285 as a BTO, it would be their own modified version with a mini display port.