Product design question

How would you improve Cultfit?

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What this question tests

Product improvement thinking for a fitness membership service where retention, not just class variety, is the core lever.

Clarify the core business model: Cultfit relies on recurring memberships, so retention and habit formation matter more than one time trial conversion.
Segment members: highly consistent users who attend regularly versus at risk members whose attendance is dropping, a common churn predictor.
Prioritize the at risk segment, since preventing churn is usually cheaper than acquiring new members.
Propose an early warning system: flag members whose weekly attendance drops below a threshold and trigger a personalized re engagement nudge, like a free buddy pass or a class recommendation based on past preference.
Address a second lever: simplify class booking during high demand slots, a common complaint that drives frustration driven churn.
Define success as reduction in monthly churn rate and attendance frequency recovery among flagged at risk members.

Identifies churn, not class variety, as the highest leverage improvement for a membership fitness business.
Proposes a concrete, checkable mechanism, an attendance drop trigger with a personalized nudge, rather than a vague more engagement idea.
Gives an illustrative number, for example assuming this reduces monthly churn from 8 percent to 6 percent.
Addresses booking friction during high demand slots, a specific, common, and fixable complaint.

Proposing to add more class types or locations without addressing retention, the actual core lever for a membership business.
Ignoring booking friction, a frequently cited and fixable source of member frustration.

How would you determine the right attendance drop threshold to trigger a re-engagement nudge?
How would you balance investment between acquiring new members and reducing churn among existing ones?