Also, considering the technical implementation: would the feature be a web app, a mobile app, or integrated into a learning management system? Features like search functions, bookmarking, and performance analytics could be added for better user experience.
But the user didn't specify who they are. However, since they asked for a "feature," maybe they want a tool that integrates into a platform or an app. Let me consider possible features. Features could include things like interactive problem-solving, multimedia content, or a searchable database with categorized problems.
Wait, the user might not be aware of the legal aspects. It's important to mention that the feature shouldn't infringe on copyright. Maybe suggest that it's a tool to generate original problems based on the concepts from Hart's book, rather than redistributing his solutions.