[DNSSEC-Transparency] security goals

Hello everyone. I recall the rather harsh discussions in Yokohoma. And now during the off-the-list discussions I had an impression that we aren't on the same page as for the goals of this effort. Can we clearly formulate what are the security goals of DNSSEC transparency? My concern is that not all Certificate Transparency goals will be applicable to DNSSEC. And I want to be sure that the result of our effort will be useful. Best regards, Jan