Visibility into DPM around backups and monitoring of DPM itself has been an area with room for improvement for some time.
I have recently posted two free community tools that can help improve both of these. One is a custom DPM report and the other tool is a DPM dashboard for SCOM. Both can be download from TechNet Gallery.
DPM Backup Summary Report: http://gallery.technet.microsoft.com/DPM-Backup-Summary-Report-4533bcc6
SCOM DPM Dashboard: http://gallery.technet.microsoft.com/SCOM-DPM-Dashboard-8eef9b58