We are currently running ODK Central on a digital ocean server. We're very happy with Central, it's working great so far.
One of the ideas we came up for the improvement of ODK central is backup management.
Currently, a backup is made daily on our Google Drive account. It would be nice if there exists an option where you can determine how often an how many versions of the backup file you want to keep. This will help save storage space and then you don't have to delete the previous backup files.
I'm curious what you think of this option!