Blast This App Idea: Reviews by Locals Only

Hey everybody, I’m thinking of an app where only locals can review restaurants in their hometown. The idea is to help visitors find spots truly loved by residents, skipping tourist traps. The catch: reviews would be limited to verified locals (using location or other non-intrusive methods). Do you think this idea has potential, or is it doomed? What problems do you see—too niche, hard to verify, or just unnecessary? Feel free to tear it apart; I’d love your honest feedback. Thanks!