This is a suggestion similar to the one put forward here
but with different mechanics, so I'm posting it separately.
I moderate Russian.SE, and due to the nature of the site most authors are not native English speakers. We have several users that don't ask or answer much, but spend a lot of time on copy-editing the posts (mainly, correcting grammar, transcribing text from the images, improving formatting, and editing tags).
I am extremely grateful for their work, yet I still feel it's unfair that a copy-edit completely hides the original author.
Right now, our frontpage looks like this: (original)
All the edits marked with the red and the green rectangles were made by just two users, and most of them are copy-edits, making the message more clear but (as a rule) not adding any pieces of information that were not initially there. Yet, the name of the original poster of the last answer is hidden from the front page, you have to click into the post to see it.
Copy-editing is a very important work which definitely makes the content better, be it that of a book, a newspaper article or a Stack Exchange post. That's one of the reasons I don't like the word "minor" in the original proposal. It's not minor, and some of copy-edits are really extensive.
With books and articles, the author's name is featured on the cover or in the headline, not the copy-editor's. I feel it should be the same way for the posts on the frontpage.
Proposal:
Add an option to mark an edit as a "copy-edit" (overridable by the moderator, also possibly by a popular vote).
Copy-edits would still cause the post to be bumped, but not change the user shown beneath the post on the front page and in filters: