I wonder whether AT Proto, the protocol used in bluesky, might make for a good base for a decentralized reddit alternative.

- public

- extensible

- bring your own client

- domains as usernames

- federated but with escape hatches so you're never tied to a single host

- considerations for twitter-scale from the start, eg with "big graph servers"

Still under a waitlist / closed for now / under very active development, but seems very promising.