You are the PM for growth on a consumer mobility app with rides, food delivery, and membership products. Rider acquisition has slowed, paid channels are getting more expensive, and leadership wants to test a new growth idea inside the rider app rather than commit to a full rollout. A proposed concept would let riders share a limited-time invite after a successful trip and reward both the sender and recipient if the recipient completes a first ride within 14 days. Similar ideas have worked in other markets, but your app already has several promotions live, and the team wants to know whether this is a strong MVP for testing real user value versus just creating short-term incentive-driven behavior.
How would you determine whether this growth idea is a good MVP to test user value, and what would you include or exclude from the first version before deciding whether to scale it?