IMHO, the central point of the zone system is that it teaches the photographer to visualize
the final print when he takes the photograph. I don't see it as much more than - I want this
to still have substantial texture, thus it shouldn't be less than zone III/more than zone VIII, etc.
With MF and 35mm you still have the chance for instance to pull in development to reduce contrast,
if you calculate with that while shooting.