One situation that has changed since 7D came out is FF has become more affordable again due to the 6D. So if crop is not a decisive affair because of range (birders) the 6D surely represents a great tool for a bit more than a current crop body. e.g. the 6D discounts posted by CR guy. My two cents...
With that in mind, one might expect a 7DII priced lower than the 6D...and with a reduced feature set to go along with that price. Still has to differentiate from the 70D, but fps and more MP would cover most of that.
I would think a better AF system would probably also be part of the differentiation. More FPS and better AF along with a competitive increase in MP would be the ideal differentiation to me. I don't think an integrated grip or better weather sealing or 1D X style buttons or anything like that are necessary to make an appropriate differentiation. The 19pt AF system definitely has its issues, though...and I would happily skip the 7D II if it ended up with the same 19pt system the original 7D had. It misfocuses too many times in any given sequence, roughly negating the additional 2fps lead it has over the 5D III.
It doesn't necessarily need to get the 61pt AF system, but something of the same precision, consistency, and accuracy of the 5D III's system would be a key differentiator for reach-hungry shooters looking for a companion to their FF.
before you hate on the 19pt auto focus to much which lenses are you using
read this http://www.lensrentals.com/blog/2012/07/autofocus-reality-part-3a-canon-lenses