Why a checklist beats a timer
Both a countdown timer and a target counter give a video structure, but they ask different questions. A timer asks how long, which every viewer can answer immediately and therefore has no reason to stay for. A checklist asks whether, which nobody can answer.
The distinction matters most in the last quarter of a run. A timer at five seconds is uninteresting because the outcome is certain. Three scattered targets are the tensest part of the video, because the remaining ones are the hardest to reach and the ball is visibly struggling.
That is also why the counter should stay on screen. The tension only exists if the viewer knows exactly how many are left, and a board too dense to count by eye needs the number to do it for them.

