This is already somewhat possible if your instance support an OIDC solution, you could create one account and use it as login everywhere as long as it’s host by the same people.
For example I use authentik to create accounts and with OIDC my users can login to jellyfin, nextcloud, vaultwarden, forgejo, …
But that would mean putting all your eggs in one instance.
the egg basket thing is not much of an issue for me. I think having to remake an account is something that is just going to be reality with the federation. Backing up settings is the biggest thing to me to make that a bit less painful.
This is already somewhat possible if your instance support an OIDC solution, you could create one account and use it as login everywhere as long as it’s host by the same people.
For example I use authentik to create accounts and with OIDC my users can login to jellyfin, nextcloud, vaultwarden, forgejo, …
But that would mean putting all your eggs in one instance.
the egg basket thing is not much of an issue for me. I think having to remake an account is something that is just going to be reality with the federation. Backing up settings is the biggest thing to me to make that a bit less painful.