I understand that but I addressed that issue in my post. Users of the 7D that want to update (ones with lots of EF-S) can look at the new xxD. The APS-C market is a little too crowded. I think moving the 7D up and allowing the 70D to return the xxD line to it's historic position could work. Make it a $1400 camera with some of the speed and possibly the AF system of the 7D and a new sensor. As it stands Canon has 4 cameras with the same sensor between $800 and $1400
No one here has suggested that you lose your 1.6 crop. If you want that there will be plenty of new 1.6 crop cameras (xxD)
All of this is useless anyway because Canon isn't going to do it. The 7D will be APS-C and it will have tons of MPs.
7D users buying a 70D means less money for Canon though and as has been said theres less of a draw for 1D users aswell if the 7D remains ASPH with no extra crop.
I agree the 7D mk2 and the 70D could do with more space between them than between the 7D/60D but I don't think ASPH is needed for that, just up the 7D mk2's FPS and AF plus possible use different ASPC sensors with the 70D upping megapixels and the 7D mk2 ISO performance.
The 1D mk4 is hardly that old either so Canon really isnt in desperate need of a new ASPH body in the short term, I'd guess they'll see how it sells compaired to the 1DX and 7D mk2 in 2012 and make a decision from there.