One other thought. Since someone might be trying to debug a core file for an executable belonging to a package which has since been superceded by a newer version in unstable or in testing, it would be useful if there was a Redis (or some other NoSQL) database where you can look up a Build-ID and get a package and version number so the appropriate dbgsym package can be downloaded by snapshot.debian.org.
I suppose the Build-Id index implemented by snapshot.debian.org's Postgresql, but I suspect storing a build-id -> dbgsym package mapping for every single executable released going forward might be somewhat large for a single-server database. :-/ Is anyone working on anything like tihs? - Ted