As the administrator/quality content controller of a site with Business Site Plan and free Workspace plan, it would be very useful for me to be able to interact with my content creators who use the Editor and don't have access to the Designer: both to make and to hear suggestions on improving site content and on better designing the site to meet content creator needs.
Our updated seat plans should help with this. You can add reviewers to your site for free as well as adding in limited users to help with editing.
You can try Superflow for this use case.