I would agree with much of what you said regarding sensors. However, it does seem that part of the Nikon philosophy is moving away from D300 and D700 bodies with pro build and high FPS. Canon seems to be a little closer with the 5D MIII and hopefully with the 7D MII. Since the 7D MII won't be out until next year, it's not option right now. I would not trade my D7000 or D300 for the current 7D.
If Nikon doesn't announce the D400 by end of year, I would assume they are not going to bring it to market. If the choice in 2014 was a D7100 or a 7D MII with a decent sensor, 8-10 fps and the AF of the 5DMIII, I would be tempted to add the new Canon. I do think the additional Canon lens choices in the 70-200mm and 400mm focal lengths would be an advantage for what I shoot.
I also don't want to be forced to buy a FX camera to have pro body with good FPS and a reasonable buffer. I would like good IQ and DR, but then I shoot a lot of jpeg photos anyway, so DR is not my primary concern. I don't see myself selling my D700, so if Nikon only cares about the FX product line, then they have lost me as a customer.