I wonder what RNN-generated fake Latin characters would look like. Sort of a handwriting version of that "what does English sounds like to non-English-speaking people" video. (https://www.youtube.com/watch?v=Vt4Dfa4fOEY)
My first thought was that, to me, Cyrillic looks how I'd expect fake Latin characters to look. Clearly related, made of the same elements, but I don't recognize most of the characters...
Mostly like real ones, I expect. We don't have root components to our characters except long and short line, circle, hook, arc, angle, so there aren't many missed opportunities for a longer alphabet. You'd need to run fakeness at the level of words, after teaching it about etymological roots.
