@kissane Seems to me that some of these issues could be solved by abstracting (if that's the correct term) the account name - my first thought is that we need something that is _just_ an identity server. Then when we create a user identity on a system, we point to the ID on that server and say 'this is me'. eveyrthing creared would use the identity on that system but it would resolve to that ID on the identity server. So your conversations wouldn't ever be referencing your 'dead identity'