Semi - re: "How many ads have you seen in newspapers and magazines that feature the processor temperatures as a selling point? "
That's really an irrelevant question, the end user is not the interested party regarding that factor - the OEM is the one who wants to know(excepting, of course, enthusiasts, who are already looking to pick up Northwoods before they sell out). I suspect that's part of your point, though. ;)
Re: OEMs not building Prescott boxes. It's a touch early for them to say that, after all, it was just launched yesterday; but they'd likely just change their case/cooling situation and charge a little more.
Paul