Have backupninja help with restoring backups
I realise this might be difficult given the range of backup engines that backupninja supports, but to whatever extent it can be done, having ninjahelper assist with recovery would be very welcome.
It's not much fun to find that a system has inadequately documented recovery procedures when something has already gone wrong, and the pressure is on to recover quickly. Even providing documentation of recovery procedures would be useful on it's own, and if those pages are locally installed, it would be easy and secure to fill out commands in that documentation with variables from the local backup configuration using a template.