Open to Docusaurus though I think we should probably improve the theme a bit 
This seems like it’d still require manual synchronization work, no? I think it’s good to keep the RFCs repo as the canonical source of truth for both WIP and finalized docs, and then separately have the website publish them.
IMO, the problem with the current website is that it requires manually rebuilding based on the RFCs repo, but I think we can fix this: we just need a push in the rfcs repo to trigger a CI run in the website repo, which would redeploy the site. We could use Github Actions’ repository_dispatch event and e.g. this action to accomplish that.