If you want to think about a *really* hard fediverse problem that would have a *really* big payoff: don't worry so much about users moving domain-to-domain.
If you want to think about a *really* hard fediverse problem that would have a *really* big payoff: don't worry so much about users moving domain-to-domain.
If you want to think about a *really* hard fediverse problem that would have a *really* big payoff: don't worry so much about users moving domain-to-domain. Figure out domains moving backend-to-backend.