Sounds like an interesting idea. I've thought a little about this too.
The Nikonos lenses don't have a sprung apertures so they are not suitable for using on a digi-cam or SLR - because when you close the aperure the view on the LCD would get darker.
Could they not just use the optical finder of the Nik V with the same framers used on film? I guess it wouldn't be brilliant for macro, because you would still have those pesky metal framers, but it would certainly be a very attractive upgrade to those with WA Nikonos glass.
There may even be some R&D savings to be made? I've seen a dismantled Nik V and it seems almost like you could drop a digital module into the beautifully manufactured external case. I'm no camera tech, but I imagine you could keep the shutter mechanism and perhaps even the ISO selection....Hmmm thinking more, perhaps this wouldn't be that attractive - as we'd be stuck with the 1/90 sync.
You would think that the manual winder could still be used to cock the shutter (like on that Epson/Leica rangefinder), but you'd still have to replace the rear door with a "windowed" one to see your image review and histogram. 
Hmmm, thinking out loud though, Keith is probably right that it might not be a profitable venture for Nikon right now and as james says, they have no doubt disbanded their Nikonos team and would have to start from scratch. Shame really... 