Sure. This sounds like a “guide”, which can be helpful. But I was assuming we were aiming for W3C specification level standards to come out of our discussions–not necessarily guides. But if so, I guess I’m unclear on the goals of our discussions here.
for item 6, do you mean redirecting just for actor/account requests or also for all the objects attributed to the actor on server A
Haha those are implementation details that I was trying to avoid getting into. But I was just raising the point that whatever needs to be done there would be platform-specific. Steps to deprecating an account that has been migrated away would depend on how users were accessing the migrated account on the platform. Maybe a 301 redirect is sufficient for one, but not for all. Maybe there are other things the platform needs to take into account, etc.