So I'm trying to figure out what would be the best way to write OCS in Cyrillic.
Studying Glagolitic manuscripts and reading some literature on it and comparing other people's work I established how OCS in Glagolitic should be written. Nothing like that has been done before, as far as I know not on the internet at least. Since there is no common census on some of the details, mainly concerning pronunciation of some letters of which we most likely will never know how they were pronounced, I devised a way to write OCS in Glagolitic that resembles the original way it was used in the oldest OCS manuscripts.
As for Cyrillic, there are some aesthetic issues there. There are standardized versions for writing OCS in Cyrillic today, like the ones used for dictionaries and grammars. But these are made in a simple way, to eliminate ambiguity and to be easy for reading. But OCS had many synographs. There was no standardized way to write it (not until Church Slavonic was standardized in the Early Modern period) so scribes could use whatever symbol they liked in whatever place (in a single paragraph one can find the same word written in more than one way); scribes invented their own ligatures and symbols for already existing ones, mainly for aesthetic purposes, and used them all parallelly not just in the same text or sentence but in the same word. This made OCS texts very beautiful, but also quite ununiformed.
I used a simple, undecorative style, for my GooglePage, but at the moment I'm experimenting with more decorative styles for my own use. I mainly use chrestomathies of OCS texts and so far I have discovered that certain symbols used in Church Slavonic were actually never used in OCS, namely Ѻ ѻ, the Broad or Round O. This one is from the 15th or latter centuries I think.