Something that helps convey the following would be best in our opinion:
In our eyes, any communication coming from a DAO sponsored channel should align with some general, pre-approved rubric. Then it could make sense to share the proposed content prior to initiating a campaign and a weekly or biweekly newsletter style post with updates on past and upcoming content to ensure the rubric is being followed. This would also be a great opportunity to share KPIs and their change over time to help measure success.
Hope this helps! Open to hearing other suggestions that could help with communication while reducing overhead.