Upload & Sell: On
The question remains. How much of the market is in my shoes, and how much really does need something more. It's clear there is a market for the D400/D9000, just not how big it actually is.
The market for a D400/D9000 is anyone who shoots wildlife/sports/action. Particularly if it comes at the specs Roger mentioned above, i.e. Great ISO performance, high FPS/buffer, pro body, etc... I am very happy with the D7100, but I don't shoot for a living and I understand why some find it limiting (build, controls, buffer, relatively low FPS).
There is an obvious gap in the Nikon lineup and, at the same time, a lot of redundancy and iteration so I honestly don't understand the argument against a D400