I'll say one thing. I deeply wish instead of the 5D3 it had been a 1Ds IV and they didn't "merge" the 1D and 1Ds lines. I really wish it had been the 1Ds 3 with very high ISO capabilities and auto ISO in manual mode. Valid points.
I'm holding out hope for a high-res body, either in the 5D line, the 1D line or somewhere in between.
While I understand the folks lamenting the loss of the 1.3 crop I'm a big fan of full frame and like that Canon is moving there along the whole pro line.
A high res, medium ISO, low frame rate, FF body would do wonders for that line, IMO. It doesn't have to be a 1Ds, but it does need the IQ of one...
The 5D3 is kind-of a FF 7D so the ultimate lineup could be a 70D (king cropper), 5D3, 3D (high res, FF studio/landscape camera) and the 1Dx...
I guess I'm pretty much agreeing with you using different names for the devices.