I really wonder who is the target for this. I suppose there are some people who either miss, or retrospectively pine after, old rangefinders and Leicas and the like, but who have not already bought the other brands that seem to have done a good job of that. But from the capability point of view, the only virtue of a mirrorless camera here is the ability to use short registration lenses, and for that, existing MLC already do this. For meterless use of old Nikon F lenses, a low end DSLR probably does it better, with no adapter and for less money.
I may be an outlier on the camera control front. Love the old Leicas and the like though I do (and as I often say, if I were buried I'd want at least one Nikon F to be thrown in the hole), when I am using modern equipment I do not mind the modern controls. Once you're used to them, they work fine. Back in the days of film, I thought one of the nicest designs was the old Minolta Maxxum 7000. To go along with its innovative AF and other electronic features, it used a completely non-traditional set of controls with rocker switches and buttons. Not a dial in sight. Off-putting at first, it was actually very easy to use, functional, logical, and with the controls easy and quick to find.
Mind you, if Nikon knows its market, and if the new ZF-c I don't want helps them to survive and funds the development of newer and better cameras that I do, then good luck to them.