We have surveys with thousands of records for forest inventory populated in the inbox, however, I currently have to make copies of the form into groups to only have records for certain groups show up since there is no way to filter the inbox by a user's group (just their username). Since our groups reflect regions, the users really only need to see records for their region, rather than all of the inventory records.
Allowing the inbox to filter by group would make the data collection and organization a lot more simpler!