This is maddening for me. The MPOs are not exactly twice the size of the JPG, but close, so the information must be there. The JPGs appear to be in focus to infinity ok, and I have lots of scenes that were focused to infinity, so I'm not sure about the 6 foot focus idea, but you are right when projected, anything close is fine. Could be because the objects are so much bigger that the detail is simply easier to see but not necessarily sharper. I can see why the videos would be blurry as each eye image is compressed when taken and decrompressed when projected, but the MPOs are not. Maybe has something to do with how MPOs are split and shown by the software used in the device. I am experimenting with splitting the images in Stereomaker and realigning them and sharpening them with some success, but now I get some sharp areas and some blurry areas. So I've arrived at the conclusion that the lenses are not properly matched and the barrel characteristics of each are ever so slightly off, so that true alignment cannot be achieved. To see what I mean, use a program like Stereomaker to create an anaglyph, and note how the objects align across the image. You will see that some align while others do not. Since I take most pics at wide-angle, that probably creates the most distortion.
I'll keep experimenting until I find a reasonable solution.