Initially, I was dissapointed with the apparent softness from my 7D, especially when compared to the output from the 5DII. But, with some carefull sharpening and contrast boost, it's got plenty of detail. I'm not sure the AA filter destroys detail, I think it mostly lowers micro contrast more. A tad sharpening and a localised contrast boost seems to really help buff the images to a very fine level.
The AA filter does destroy fine detail, however sharpening will give the illusion of bringing back some of this detail.
The softness isn't my biggest issue though, it's the effect on micro contrast and a 'muddy' look that is more apparent for me. Yes you can give the files a contrast boost to minimise this, but you can never really get back that natural 'crisp' look of an image (that's why I think so many people love the original 5D). Also this is allot of time spent in PP that shouldn't have to be, and all the extra sharpening and contrast boosting has a negative effect on noise, and while the 7d in this instance doesn't suffer near as much banding as the 5D's, it doesn't exactly have very pleasing grain (it kind of look digital, similar to jpg artefacts).
As for all the other aspects of the 7D, yep I agree, it's a great body, and I would have purchased one if the IQ was better.
When the 7D first came out, I thought it was largely the glass holding it back due to the pixel density, but since the advent of AA'less crops, you can see that isn't the case at all, just look how much detail the nex 7 can resolve compared to even the 5Dii, and the 5Dii also has the FF advantage of less magnification allowing lenses to appear sharper.
Personally my next camera will likely not have an AA filter if it's shown that moire isn't a common occurrence at weddings etc. I generally shoot wide open with primes so I doubt it would be an issue but will wait and see.