I would be interested in what is sort of the inverse of Medium's latest action. I very much disagree with Ev William's statement of "the idea of an imprimatur that establishes credibility or trust. Trust is more important than ever and well-established editorial brands still have meaning. But today, credibility and affinity are primarily built by people — individual voices — rather than brands."
What would make your product most valuable to me as both a consumer and a contributor would be a way to establish an aggregate reviews in a specific way, such as by editorial board or brand. A group of reviewers working together. Sort of like a subreddit. Not only being able to sort reviews by author or people I follow, but compare the rankings of the consumer reports team to the wirecutter team (examples of competing review brands.) I want to look at a masthead and trust their overall review quality standards, to find the reviewers I can trust.
A CMS to host reviews is cool. A way to collaborate and build complex team consensus is even better.