The feature request "Report that will list All Recipient types and be able to filter by recipients with mailboxes, As well as be able to calculate average mailbox size looking at all recipients and not just users." has been raised as Enhancement Request (TF00645839).
This will be evaluated by our Product team for inclusion in a future release of Recovery Manager for Exchange.
A list of “Resolved Issues” is published in the product Release Notes accompanying new releases that can be referenced to identify if a fix for this defect has been implemented.
Product Release Notes are available in the “Product Documentation” area of our support portal at support.quest.com