Okay. So I understand your answer. I don't really like it and would like to request that you think about agency access and how we can incubate client campaigns.
The thing is that most clients start off tentatively with Moz. They need a 'dip in the pool' approach as it were. They need hand-holding from their agency until they've got confidence and that means one on one sessions. This is not meant as patronising in any way at all to a client, the first tour through the campaign is overwhelming.
However once they've got understanding, the nature of the relationship changes. There comes a point that an agency packaging up reports to pass on to the client is pointless. They want access to the UI themselves. This is where being able to turn a campaign on an agency account into a campaign just for a client account would be helpful.
As agencies often work with multi campaigns in their accounts this is where the problem is. How do you train up a client, nurture them and then give them their own access if you can't transfer the data to a new campaign and client account?
It seems to me that you're missing a big use case scenario here. And you should be working with agencies on a closer level as we are often the incubators and stepping stones to ultimately get solo client accounts and campaigns.