Engagement
You know who is drifting before they go.
Members show you how they feel by what they do, and the weighting you choose turns that into a shortlist worth a conversation. It comes from what actually happened rather than from a survey nobody filled in or a hunch nobody can defend. The conversation happens while the member is still listening.
Score behavior you already record
Events attended, content opened, purchases made, chapters joined. Weighted the way your association values them.
Watch the score move before the membership does
A score is worth having because it changes earlier than the renewal it predicts.