Andrew - why do you think Canon wont follow Sony? Sony have a top end line too and don't cripple their bodies. Sure the 7d could have been better but when you consider still that the 7d was used in films in the cinema, can we overstate it? My A7s defo looks MUCH BETTER than my 5dmk3, but the 5d line is so important to people all over the world, professionals and otherwise (and many photojournalists) that they are not going to (and cannot) throw that heritage away.
Canon are so much more consistent than Nikon with their weird bodies and strange specs. The 7dmk2 is exactly the same as 5dmk3 and their line is clearly delinated. That's a great strategy and better than Nikons weirdness (despite their innovation - which really only amounts to using the latest and greatest Sony sensors)