An simple, fast, easy-to-use utility to recover one or a few files from backup and decrypt and transfer to the local filesystem and/or the swift production cluster is a must.
The application or script should probably live on ms-backup hosts, and ask for a title, hash, or other methods to identify 1 or a few backed up files, either interactively or on command line/with an api, and download or import those files into swift.
This should be on a maintained git repo and packaged and deployed into production.
Its usage should be very simple, as it may be used during an outage, but anyway should be extensively documented (both the general backups architecture and its operation) on wikitech.