Originally posted by Asahiflex What would be the USP of those three systems that Pentax doesn't offer?
I don't know for Hasselblad and Mamiya. I read some comments from Hasselblad users how much better the build quality and ergonomics is from the S2. A $10,000 price difference is nothing to care about for a successful pro. To be welcomed, treated well and be recognized by the camera maker of choice is much more important.
It remains to be seen if the 645D plays in one league quality-wise with Leica, or rather in one league with Hasselblad. I agree that the USPs for Hasselblad may be their support network and spectrum of products rather than their actual product. Pentax certainly cannot afford to deliver de-centered lenses, mis-calibrated cameras, misaligned focus screens, breaking SDM motors etc. into the MF market. They didn't do so in the analog era but started to have some quality issues recently (like other mass market dSLR vendors). Where will Pentax assemble their MF lenses and where does Leica?