PMP Practice: Promote the Shared Vision

Ember Johansson-Wright is leading an agile project at Brisket Quantum Group to develop a mobile puzzle game. During sprint planning, the product owner, Min-Ji Lee, insists the team prioritize new cosmetic features to attract players, saying 'We need visual wow-factor to compete.' Meanwhile, the development team raises concerns that core game mechanics still have stability issues affecting 30% of users, with crash reports increasing weekly. The team architect, Lucía Delgado-Vega, states that without addressing the technical foundation now, future sprints will slow dramatically. Dante responds that marketing has already committed to showcasing the new features at an industry conference in four weeks. The team is divided—some want to please the product owner, others want to fix the technical debt. What should Ember do to align the team around a shared vision?