Scott, I certainly take your point on the maintenance thing (much as I would like a Rhodes/Wurli for the studio, my lack of practical skills is one thing which has put me off that idea) and the Hammond comparison, to some extent.
But there are lots of other boards around many of them lighter and cheaper which offer a wide range of great electro mechanical sounds but also offer so much more. My CP4, for example, has models of 1971, 73, 75 and 78 Rhodes, plus a Dyno, all of which are pretty good and can be quite deeply edited to suit your taste. But it also has three really good piano samples and more.
I'm sure there will be people for whom the Seven is a fit, but overall I see it as a pretty narrow market, sitting between two extremes the absolute purist (who will buy, maintain and gig the real thing, usually with crew) and the workaday road warrior who needs a board that will do most things pretty well.