You know, I don't even care if it came out to the same price I pay now, I'd love this feature. Not too long ago, multiple HD TV's in a house were rare. Now, a lot of families like mine have multiple big screen HDs (I have three--42, 46, and 65 and 102" drop down screen in front of the big TV with a projector we only use at night). With three duo HD DVRs, I either end up redundantly recording certain shows because I'm not sure where we'll watch it, or the whole family has to setup camp in the master bedroom because we want to watch a show I only recorded on that DVR. SD 2nd TV is not an option. I'm in the multimedia production business and am very picky about quality.
I'd love to just have one big ole recorder that records the kids shows, the mother-in-laws shows, and my wife's and my shows and then let us watch them in whichever room we want too. I have U-Verse for Internet access, but after the trial rejected their TV service because they can only offer two HD streams simultaneously--so forget it when the kids, granny and I are watching TV and taping a fourth one for later.