Especially for database servers, it would be great if we could have live snapshots of block storage volumes. It would provide better backups in the case of failure, allowing quick restoration of the server on another similarly configured droplet. Ideally, if we're also able to have more granular control over the scheduling of the snapshots (e.g. what times/days/frequency) there's more flexibility to it as well (and the snapshots charges could be per snapshot, so with increased frequency there's an increased cost...which is fair considering the extra peace of mind!)