Comment 2 for bug 1066919

The dropdown we offer is to select the archive root, not the actual ppa, but most (98%?) of the time reviewers pick the private ppa archive root, and select a ppa owned by ~commercial-ppa-uploaders. In this case the gpg key and fingerprint could be prepopulated with the right values for this user. Maybe even prepopulate the archive_id field with "commercial-ppa-uploaders/".

For ARB apps we could just leave these fields blank, as they're omitted from the form altogether.

This should be about a day's work, or less.