Please add the ability to allow some users to edit/delete other peoples comments. This can be controlled through permissions.
At our organisation when reviewing drawings there is a review manager that consolidates comments before sending them back. This process occurs regardless of if we are using Bluebeam or another tool.
Our current workaround is to remove the documents from the Session, make the edits and then re-upload to the session. However this causes issues as all the comments are then locked (even from the users that made them). It also means those changes aren't tracked in the Session audit history so its not clear what was changed.