Ensure the review quality by randomly inserted test proposals
From other platforms where user content is reviewed, I know the concept of showing randomly test questions and show feedback to the user. Feedback is the user passed the test or not and on what criteria he should done his decision. If they fail in several consecutively tests, users are blocked for a short time or must redo a training.
So adapted to wayfarer, that would mean that may be one of 50 reviews shown to the wayfarer is a test, with a clear case how to decide. And after the wayfarer had done the test review, the information that this was a test and how he did.
From the other communities I know this is a great experience to see how you are doing on the reviews. And it is good for the quality in the communities because everybody reviews more focused.