Many of the glyphs have trends that are hard to account for, such as, why does it never start a word? why does it never end a word?
It's obviously more complex than that, but some simple examples. Once you try to assign something you will run into these.
There is a cool example of something looking maddeningly like plain-text that I got a tiny bit obsessed with once upon a time. On You are not allowed to view links.
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Login to view. there is (in the top right) a man with liquid(?) going into his mouth.. or out, anyway, I think it might be the only example of this clearly happening in the manuscript. Next to him is the text "s oral"
I guess the point is, however strong the link seems, it will fall apart once applied elsewhere and we only have so much time, so it might not be the best use of your time.
Obviously its up to you though.
I noticed you mentioned the use of EVA: "y" and "o", and I don't think I can comment without infecting your thread with my theories.. so I would just say if you are interested in this stuff I would suggest checking out Stolfi's work