If BMF.io replaced all videos with live-only classes, completion rates would likely go down at first, even if engagement feels higher for attendees. Live sessions introduce scheduling constraints, time zone friction, and higher drop-off before users even enter a class. Measuring this means tracking attendance logs, drop-off at registration, and replay absence since there would be none. Like analyzing voice query flow, we would watch where users abandon the funnel or request alternatives. Heatmap-style behavior in this case becomes sign-ups, reminders, and no-shows.