I'm planning to add comments area for Page edit.
It's not for site visitors.It's for site managers.
Websites are often managed by several people. If there is a place for discussion on each page, it will make more efficient in management.
User1 "This page needs update."User2 "I agree."
UserA "I created a draft. Is that OK to publish?"UserB "OK. I set to publish this page on Tomorrow morning."