I don't know if Cosina is still watching this thread, and I don't know if any of these things have already been mentioned, but, to be honest, I am a bit in my cups, so to speak, at the moment, so I shall air my thoughts anyway.
I noticed that a couple of people have mentioned the short EBL. If Cosina is going to keep the short EBL, why not make a smaller body for it, something the size of a Leica CL or smaller, in either m or LTM mounts? Since CV likes to brag on having the fastest/smallest/widest etc, why not produce the smallest M mount body ever?
Also, I would love to see an extraordinarily tiny 35 or 50mm lens, even if it is slow. By extraordinarily tiny, I mean a lens that only sticks out from the body 1/2 to 3/4 of an inch. I don't care if it vignettes a bit. I don't care if it has to be a large diameter to compensate. I would just love to have a non-collapsible lens that I can keep on a camera under a shirt or jacket that doesn't give much in the way of 'lens bulge.' Alternately, I would love to see a collapsible lens that actually makes the fact that it is collapsible useful. Voigtlander's current collapsible 50 isn't much smaller than a 35 or 40 1.4, or a 50 3.5 color skopar. Surely there has been enough advancement in optics in the last 70 years to produce a faster or smaller version of the collapsible elmar, or the very limited edition collapsible voigtlander lens that was available a few years back.