Well, I think that you could be quiet right

Numbering has nothing to do with sensor size. 1D Mk IV is pro and it has APS-H, also 7D is considered to be pro with APS-C. So there could be 70D with FF...
7D Mk II - true succesor to 7D, weathersealing, pro features, maybe 61 point AF, new sensor (around 22-24 MPx), dual card slots etc.
70D - move it to FF and make it nice addition for 7D users, possible backup for 5D Mk III users, reuse 5D Mk III or 1D-X sensor, 19 point AF, single card slot, more plastic body, around 4 fps, same battery as 5D Mk II/III and 7D,
please no flip-turning-rotating LCD and
return of AFMA (please ! ).
I can imagine it. And can imagine it could be a good seller with 1800 USD price tag.