Security Role/Feature for Maintaining Comments (by business/functional)

We could use a new Role or Feature to allow us to “Maintain Comments” for Mappings while restricting maintenance of other fields on the Mapping screen. This will allow business/functional users (non-developers), such as SI analysts or client business analysts, to add comments on mapping changes or clarifications WITHOUT opening other mapping fields, e.g., Map Action, for unintentional changes.