I love my 7d2! But coming from a 350d I think I'd love a faulty 7d2 too!
I feel like my keeper rate has increased quite alot but I suppose that should be the case compared to 350d.
However Im not getting THAT much more sharper pictures I imagined and the keeper rate is not something one might assume after getting one of the best AF systems Canon has to offer.
Anyway - Im happy with my money spend! At the beginning I found myself looking for softness in my pictures but luckily my good friends told me not to pixel peep and now it's all good!
Dunno if I see or should see any difference between my shots with the 350d and 7d2. 7d2 just makes everything easier and gives me more of those keeper shots! Feel free to take a look at my photostream if you can pick the difference! https://www.flickr.com/photos/129552137@N04/
The slight difference in the MP of the sensor will not make a image sharper, but you should be able to pixel peep and not see a blurry mess. I would expect to be able to crop a image and still have it sharp.
The extra $$ is for the dual processors, the fancy autofocus, and for the $$$$ spent on development. Once Canon has recovered their initial cost of tooling and development, the price can easily drop to $1300 and they will still be making a big profit.
I have not bought one, even though its a good camera because I know that I'd be disappointed with a crop sensor at the current price. I may go for one this fall, depending on what other new bodies we see.