I guess the price has to be stratospheric, because they have only a limited window of opportunity. I expect that, within a few years, HDSLRs will have global shutters and be able to do sustained full-sensor (> 20- MP) RAW at up to several hundred frames per second, for less than $2K (lenses extra, of course). By then, they may even have more videocentric features. Although they will probably Pop still lack many of video-camera niceties, I'll bet few will be willing to spend $50K more for better ergonomics.
Not likely. This is like saying: in 5 years they are gonna make a car that can pull a 1.1G turn, reach 60mph in 2 seconds, and have a top speed of 225MPH, all for $14,000 that runs on tapwater. So no point in a PROam racer to buy a Porche 911GT3 Turbo.
Its just not realistic. At this point, the improvements are going to be incrimental for a while....