A semantic encoding system?

[oshfdk]

Anyway, I would think that if it is a conlang of some sort with its own original grammar, there is no way one may decipher it as there is nothing we could use as a reasonable basis to do so. It would be virtually similar with Linear A (although not a conlang) where we do have letters we can actually identify but the language remains obscure… So in the absence of a key to decode it, this hypothesis implies the VMS will remain obscure no matter how much time we spend analyzing it’s structure.

I don't think so.

If this was a conlang designed for better communication (as opposed to a cipher designed for restricted communication), then labelled images would have been an ideal entry point. There are dozens of labels attached to various images in the MS. If Voynichese was a faithful representation of any language at all, no matter if Chinese or from Nibiru, invented or lost, then listing all labels, assigning possible meanings based on images, finding the same words in the text, identifying possible meaningful sentences, assigning meaning to more words, cross-checking with other sentences/images would be a slow but probably very well controlled and ultimately successful approach to deciphering the manuscript. However, quite a few people tried this approach and as far as I know it failed every single time. This failure is usually explained by scenarios like "unskilled scribe", "dyslexic author", "clueless restoration", "irrelevant decorative images", "hard to record language", "multilingual hodgepodge" or a combination of these.

The easiest alternative explanation is a cipher that can encode a word in many possible ways, which would be a sensible thing to do when enciphering a large illustrated text. So, even when two images show the same thing, the labels themselves can be different and still decode to the same word.