Prioritize Features Using RICE (or other framework)

You are evaluating a list of candidate features for {{product_name}}. For each feature provided in the input list, calculate a RICE score (Reach, Impact, Confidence, Effort), rank them from highest to lowest priority, and provide a short justification for each ranking. If RICE is not appropriate, suggest an alternative prioritization framework and explain why. Output a table (or JSON) containing feature name, R, I, C, E, RICE score, priority rank, and a 1–2 sentence rationale.