Annual DAO reviews and governance reports should be mandatorily archived on-chain for transparency and immutability. On-chain storage ensures verifiable, tamper-proof records accessible to all stakeholders, fostering trust and accountability. It aligns with decentralized principles, enabling community oversight and auditability. However, challenges like high gas fees or data privacy concerns may arise, requiring optimized solutions like off-chain summaries with on-chain hashes. Mandating this practice strengthens DAO integrity and public confidence.