I am definitely interested in the statelessness aspects of Serpent OS and I am trying to figure out how I can help with that right now:-)
I am currently bastardizing arch linux into an immutable and stateless OS (repo, a huge mess of python scripts that produce dm-verity backed arch linux installations).
Serpent OS could become a much better basis for what I am doing (maybe I can even sneak some of my ideas in;-).