It has been interesting to see what changes I have been making going from DX to FX shooting. However, as far as I can tell, I still try and fill up the whole frame with as much landscape and/or my object if it's a portrait shot, etc. Coming into the FX world, my thought process did not entirely change the way I shoot. I feel that I must compose my shot the same way as I would in DX, in that I do not want to crop as much possible.
Having to work with much higher resolution and better IQ produced by the D600 definitely changes my post processing but not so much in the crop area.