Everyone here is crazy busy right now, but work moves forward on addressing some of the questions and solutions posed here in the comm.
oulfis reports that the distributed_fandom Discord has 109 people now, a lot of energy, and although folks ARE talking about what will need centralized hubs, etc., it's not 100% distributed all the time.
pearwaldorf, who last reported on progress here, says that there's lots and lots of stuff happening re: Hubzilla on the Discord server, but it's more likely, at this point, to interest only those who want to get involved in development or project management. There's not been a public test server announcement yet. But they have been in touch with everyone who has volunteered to help or who want to be getting project updates (basically, Discord).