We've both added To-Do's to a feature's requirements and to the feature itself. I want to see a summary of all the To-Do's in a feature AND in a feature's requirements.
Feature-level To-Do's are broader and about resolving the business need, priority, or other question.
Requirements-level To-do's capture work we need to do to finish specifying a requirement. Requirements are our "Definition of Done" for a particular feature.