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I feel for guys that are in your boat Andre. I hate to think Will is right on this, but I honestly have to say I believe Will is right on this. D2Xs --> D3 (FX) --> D3S (FX) --> D4 (FX)...
Nikon starting coining the D300 the "pro" DX body, and I honestly think it looks like that will be the top "pro" model base from here out. I could be wrong, but I think you saw the evolution to the 300s, and now the rumors have it for a D400. I think that is what you're looking at. A D400 would I'm sure appease most pro DX-primary shooters, but the trend for DX bodies seems to be for the entry-level stuff. The 17-55/f2.8 DX seems to me to also be the last specific-DX pro level lens. Most DX releases since have been entry level kits or zooms or lightweight primes. Granted, DX users can use FX lenses to great effect, but since the 17-55 how many amazing pro lenses in FX format has Nikon either released or revamped? A ton.
And now comes the D600. I had no urge for a 36MP D800 for what I shoot, and though the D4 was a great release for many, it isn't enough change from my D3S to make me put the deposit on. However, a 24MP small-body FX camera might just cause me to rid myself of my last two DX bodies (both more entry-level cameras anyway). I see a lot of pros and high-level enthusiasts strictly FX these days for whatever reason.
Andre... I honestly see your argument about FX not being for everyone, and I can't argue at all. Kerry has been vocal the same way. You're both right. But for me... even as a sports shooter predominantly, I really have no desire for a new high-level DX body because I've really fallen all over the FX sensors. It will definitely be interesting to see where Nikon takes the two lines in the next 2-5 years. It seems to me they are marketing their lines as Nikon-1 (a step-up to interchangeable lenses for amateurs coming off P&S cameras), DX (their mid-range medium-sensor line) and FX (for serious enthusiasts and pros). I may be wrong... and often am!
Strangely I just pulled up Thom Hogan's archived but still fairly recent comments on DX LINK HERE and he seems to agree with you Andre about Nikon's approach being a little annoying to some DX users.
Anyway, we'll see... I'm hoping for a great new D400 soon for you Andre!