We absolutely agree and have submitted DCR to request this as well on behalf of our 60K person company. Our communications team chooses which News posts we want to add comments to and uses the publish to Yammer function to get that functionality. The fact that Yammer automatically sends posts of it's choice to Yammer completely disregards that and does not give admins a clear visibility to the posts themselves. This feature is reckless from a community management standpoint.
