Crucible reviews comment permissions

It would be good if moderators or authors had the ability to modify defect comments, in the situation where the author of the comment is out of the office and they want all the comments resolved before closing the review.  Although it's true that it's possible to close a review with open comments, that cannot always be done. It would be best to have someone other than the author or moderator update a reviewer's defect category and/or comment in such cases.