Twinned Glyphs

[Emma May Smith]

While I can certainly see where you are going with your diagram, and have sympathy with the idea of the script being systematic, I'm concerned that you're perceiving relationship based on appearance rather than function. Yes, appearance potentially matters (I certainly think it does), but if we're going to propose that the script was designed then we must believe in some underlying design philosophy. Was the idea simply to make some glyphs appear similar, or to make them appear similar because they work in a similar way.

I believe that the Voynich script could be featural, or have a featural aspect, but that requires a marriage of appearance and function.

For example, how would you describe the functional relationship between [y] and [l]?