Voynichese is a numeric cipher?

[ololololo]

My cipher is a modified substitution cipher. In fact, it is the same as the substitution cipher for letters with ordinal numbers. The numbers themselves are also somewhat disguised.
On this scale, it is closer to substitution than to the Vigenère cipher. 

You cipher includes anagrams, if I'm not mistaken. Which makes it way harder than the Vigenère cipher. I'd say it puts its complexity very close to "impossible", but this is subjective.

Oh, you mean that... Then yes, you are right in some ways. But the algorithm itself is not complicated and I don't think it's much like the Vigenère cipher.