A ready-made filter on every site
The CASES tab on a site dashboard lists everything ever submitted there. A Site Custom View adds a second tab beside it that shows only the cases matching a filter you define once - open quality checks from the last 30 days, say - on every site in the project. Reviewers get straight to the work that matters at each site instead of rebuilding the same filter by hand.
Open Project Settings (the gear on the Project dashboard) and, under DASHBOARDS, select Site Custom View. Existing views are listed with their Name and a Selected Filters link.