Product design question

Improve Craigslist.

Practice this question out loud. An AI interviewer asks it, follows up like a real interviewer would, and scores your answer. Type or speak.

What this question tests

Product improvement on a deliberately minimal, long standing product, testing whether the candidate respects its niche while fixing real friction.

Identify the user: bargain hunters and local sellers who value Craigslist's simplicity, low fees, and local focus over polish.
Name the core pain point: trust and safety, since Craigslist has long struggled with scams and unsafe in-person meetups for transactions.
Propose a solution: an optional, lightweight identity verification and in-app messaging system that keeps phone numbers private while building buyer-seller trust, without adding heavy account requirements.
Prioritize trust and safety over cosmetic redesign, since it is the most cited real world complaint about the platform and a barrier to more usage.
Define success as reduction in reported scam incidents and increased completed transaction rate for listings that use in-app messaging.

Targets Craigslist's well known real weakness, trust and safety, rather than proposing an unnecessary full visual redesign.
Keeps the fix lightweight and optional, respecting the platform's deliberately minimal, low-friction identity that longtime users value.
Picks a concrete safety metric, reported scam incidents, that ties directly to the stated problem.

Proposing a complete redesign that ignores why users still choose Craigslist's simplicity over slicker competitors.
Adding heavy account or verification requirements that would drive away users who value anonymity and low friction.

How would you keep this optional without leaving unverified users at a disadvantage?
Why do you think Craigslist has not already fixed this given how long the complaint has existed?