The complete answer for hub replacement == Hub Protect?

[tony.fleisher]

Technical limitations are always a constraint on what capability any service can provide...

You can see the response and explanation from Bruce here for the details:

Any update on when we can get the new "Hub Protection Service"?

Our desire to bring this service to market did not mean that we would find it easy to do. We encountered unexpected problems, and those lead to delays. We usually keep quiet about what we are planning to bring out, and in hindsight that would have been a good thing to do here as well. Our intent was certainly never to mislead anyone about it. Having failed before in our estimate of when this could be made available, we are not going to say anything about that now, other than it is still a to…