I'd love to see the X-Pan revived as a dedicated panoramic camera, with a 24x72mm CMOS sensor and live view (start with two D800 sensors side-by-side, and go from there). It'd be a compact system and rival 617-format colour film for image quality, with the same 1:3 aspect ratio, too. 24mm, 30mm, 50mm and 100mm lenses to go with it, preferably with tilt and vertical shift for focal plane and perspective control (since landscape is the most obvious use for such a body). Hasselblad could do it; so could the Sony/Zeiss partnership.
It's unfortunate that panoramic formats have been neglected since the digital revolution. Previously, we had 612, 617, 624 and the X-Pan format to play with - all compact (for their film size) systems which were highly portable and eminently suitable for landscape photography. These days, however, we're stuck stitching images from 35mm cameras (with the inevitable problems with moving subjects or wind) or cropping from MF sensors, which often don't offer lenses wide enough for what we want to do (28mm on a 54mm-wide sensor really isn't all that wide). The price of high-performance 35mm CMOS sensors, however, has now fallen to a level where we can easily justify sticking two of them side-by-side and paying $8-10k for a dedicated panoramic camera.