I'm not sure why anyone would cheer for Canon not to update the 7D. It is three years old and there are features that would improve it. Nikon's D7000 is a terrific camera that sells for hundreds less.
For those that prefer the reach it offers, it would be great to achieve improved DR, better IQ and some minor refinements/additions to bring the camera closer to the new ff siblings. This will not only make the product line stronger but also offer more choices for a natural progression up the product line. The Rebels make great DSLR entry choices and I see them everywhere. The XXD is the perfect hobbyist/amateur choice. The 7D is and can remain, with an updating, the perfect bridge to the pro-lines found in the ffs. The 7D is already v.good but it can be better still (if the pricing is kept under control) to attract more waves of pro-sumers.