Also, how likely is it looking that we'll get federated groups that are compatible between both Mastodon and a Misskey derivative? Or ideally compatibility between a whole bunch of ActivityPub implementations.
I'm pleased to see some progress at https://github.com/mastodon/mastodon/pull/19059 and I can appreciate it's not something you would want to rush.
@crossgolf_rebel @fediversenews My understanding was Misskey et al channels aren't federated but I would be thrilled to learn they do in fact have a federated groups functionality.