I'd like to have a backup config similar to FEATURES list, where admins can assign what features will the account have.
By using this feature, we could select what accounts to backup regularly (just like now) and what accounts have lower/higher priority and should be backed up more/less frequently.
default: every 2 days
If we create a new list and add 3 accounts into it that have a very high priority, those three accounts could be backed up every 24 hours instead (as set by admin).
As some servers have hundreds of accounts with scheduled backups to run every 7 days or so (otherwise sites would be slow most of the time), admins could protect important clients data from the potential HDD crash more efficiently by backing them up every x days instead.