I think we should separate out questions about the schema -- whether the "Intended Usage" field being "obsolete" means that the entire registration is obsolete -- from questions about the presentation -- how IANA media type registry information is made available to the community, what it looks like, what other tools are available for finding, reading, marking, downloading, interpreting. I suggest that the latter is more of a topic for "IETF tools" discussions (tools-discuss@ietf.org), and that we should look generally at making the IANA web pages more useful for its various audiences. As for the former, I think that using the "Intended Usage" field in the registration schema to note registrations that are "Obsolete" is a reasonable choice. Larry