I was about to ask where you work that you’re implementing new CRDTs and then I noticed your username! Thanks for all that you do!
I work on the live collab at my company, and using AI while coding has into recently sort of “clicked” for me. We use an (I’m pretty sure) unheard of algorithm for collaborative editing, and I’ve had a long term goal of turning it into an implementation of EG Walker, but our document model is very complex and most out of the box CRDTs don’t quite fit. Maybe Fable will be what gets me over the hump.
Long shot here because I'm not knowledgeable enough about CRDTs but maybe something like DSON would help? I saw a talk about it a while ago and it might be useful.
https://blog.helsing.ai/posts/dson-a-delta-state-crdt-for-re...
https://www.youtube.com/watch?v=4QkLD7JhD_I&pp=ygUJZHNvbiBjc...
I’d be fascinated to hear more if you’re willing to share. What is special about your document model which makes existing tools like automerge a bad fit?