I know that there are people that think authors should be able to edit comments to their posts but I disagree.
I have a political blog with people of lot's of different backgrounds being author on my site.
When I enable them to change posts after they have been published, they are also able to edit comments, and see emails of commenters.
I allready have made some adjustments so that this is not possible within the standard WP functionality on my site.
But, when I use AEC the possibility for all authors to see and edit all comments below their posts are back.
I would, however, give "normal" visitors the right to edit their own comments.
I now have "solved" this issue by disabling the right for authors to edit their posts after being published.
I would however like my authors to be able to change their posts after being published but not to be able to edit all comments on their post.
To me those are totally different things.