Here's my list:
- User-serviceable rangefinder alignment on the next iteration of the Bessa R series!!
- Adapters: Contax-LTM and/or Nikon-LTM. Cosina has already proven that they can build S and C lens mounts. M mount would be fine, too, if LTM is impossible.
- Bring back more lenses in LTM mount. In recent years Cosina has produced too much M mount stuff for my taste. For me the point of Cosina lenses was to get new, good lenses for classic cameras, and for that LTM makes much more sense.
- I'm not particularly interested in having more RF lenses. If anything, give everybody the fast 50 they are clamoring for, and give Leica a run for their money.
- Last not least: More manual-focus SLR lenses!! Something like the classic Nikkor 35/1.4, for manual focus, and for Nikon, PK and Canon EF mounts. (There was a 125 Macro lens in EF mount with automatic diaphragm, so Cosina apparently either has a license for the digital protocol or has reverse engineered it.)