Your comments

I have let the Precetor of the class know of this and have been in contact with them to do something about this. I believe the main problem is that many people grading the assignments do not sign with their name, so it is almost impossible for them to be tracked down and sent a warning to / be banned from grading homeworks if they don't stop.
Of course, this rule exists for quite a while now, but it seems like people may just be ignoring it. I also sent two complaints about the two 'best' members of the Jade winglet, whom i have noticed copying the exact same response a few times by now, but it seems like not much has happened to prevent this, so i decided to get in contact with the Preceptor to figure out a solution.
My first idea of adding the names, similar to the layout of the letter system, has already been passed to the Preceptor aswell and i believe it is being discussed between a few people who may be able to code somthing like this into the gradings.