[split] Verbose cipher?

[Koen G]

Could the function of the glyph pair (e.g. verbose cipher component vs frequent bigram) be some how reflective of the impact it has on entropy? That is, could removing one or the other “kind” of pair be associated with a particular direction of entropy change (or lack thereof)?
In other words, are we completely certain that these two functions would not be distinguishable through the statistics?

It probably depends. I suspect something like English qu would be indistinguishable because q is always followed by u. Reducing it to a single glyph would increase entropy, since you'd remove a whole lot of predictability. 

If, however, it is some other frequent glyph pair like [ou], the increase in entropy might be less. This is just a guess though.