When onboarding new reviewers and nominators - better training. better training. better training. If you have no passed the training no nominating.
Do regular 6 monthly refreshers. Sure be annoying for the many but every organisation I work in and every volunteer organisation I am in - we do yearly, six monthly and even monthly refreshers. Keeps us on our toes. Keeps up to date. Keeps us aware. It works.
More honeytraps in reviewing
Training should take into account things like the Criteria Clarification Collection (Criteria Clarification Collection - Niantic Wayfarer Community)
And feature some of the great advice on what makes a good nominations such as this Wayspot Title and Description Tips
Clean up the Featured Waypoints. Often they do not meet criteria. Often poor examples. Whoever is editing these needs to do the training. And if automated. Fix it.
Ideally these should be well presented. Good examples of what makes a great nomination. They should be leading quality - not promoting mediocrity let alone waypoints that are fails
Really really help people become better nominators AND reviewers 