I was all set to sell my 5d2 and get a 5d3, and then the latest rumor...argh. While I really "want" the 1dx, it is just hard to justify right now. About 80% of my shooting is sports - whatever is in season and I can get access to or that I'm hired to cover. Hockey is a big part of the mix.
I find I shoot sports far more with my 7d than the 5d2, mostly due to the "reach", but partly due to the better focus hit rate of the 7d. 8 fps is nice too.
But I find the 5d2 images significantly better, particularly in the 1600-2000 ISO range required at local hockey rinks. And like everyone else I've read, I find the 5d2 images (FF) to be noticeably more pleasing by all measures, and infinitely superior for portrait/landscape work.
I've been holding out for the 7d2. If it is anywhere near the specs listed, with improved IQ at higher ISO, there will be no way for me to resist. I don't care that much about more MP, GPS, or video features. Improved IQ/ISO performance is tops on the list for me, followed by even better AF than the current good 7d. For me, you can leave video off. I can count on 1 hand the number of times I've shot video.
OK Canon - hurry up! It's been more than 3 years now. The 7d has more than paid for itself!