Having a D400 as a "lower" cost entry point into the FX format would be so nice. The FX bodies, I hate to say, as my blood is likely yellow and black, are insanely overpriced. The price difference for the larger sensor is simply an attempt to maintain margin. These are simply bigger sensors- they are not, say, medium format ones. The price jump is too steep for most advances amateurs. Some kind of "bridge" into the FX format would be very welcomed.