The product line according to me (after updates)
1Dx - Flagship - $7000
3D - 4k Video - $5000
5D3 - 25-30 MP - $2500
7D2 - 21MP - $1600
70D - 21MP - $1200
T4i - 21MP - $800
T4 - 15MP - $600
What is it with everyone thinking that they are going to make a 3D?
Unless they actually make a 3D capable camera it won't happen. Same reason why we won't get a 2D.
Similar to your ideal i now get the feeling that its going to go something like this...
1D-X Flagship - $7000
1D-C 4K Video DSLR - $5000
5D3 - High MP Full Frame, Basic HD video (similar to mk2 already has) - $2500
7D2 - Top APSC - $2000
The the usual such as, 70D, 700D, 1200D etc
The top 4 are going to be the key here.
From what Canon seems to be doing, they are streamlining their products.
Key being that the 1D X is the Photographers camera and the C being the videographers camera, for example the C will not have the high 12fps shooting speeds of the X or the ethernet connection, instead it has 4K video and headphone jack for audio monitoring.
And before anyone else decides to smite this post i understand the D and the Ds were different lines of the same family in basically the same situation. lets just see how this plays out this time.