This framework provides a repeatable, three-phase mixed-methods blueprint for quantifying the user journey across a product area. By integrating expert heuristic evaluations with large-scale, unmoderated research, the framework moves beyond point-in-time usability snapshots to track the evolution of user expectations and friction over time. Attendees will learn how to execute a multi-part study, transitioning from technical audits to experience evaluations and longitudinal trials, that yields high-impact data for identifying gaps and driving strategic product roadmaps.