I have seen a couple recent edit proposals from people who didn't have the rep to really make one that added something significant to the original post. The addition was correct and helpful, but I wouldn't have wanted to put it over OP's signature. Making it a comment or an answer seemed more appropriate to me. I would like to have a way to reply to the edit proposer with a suggestion like this. I tried making a comment to the question with the @ notification to the proposer, but don't know if this works. I suspected that the edit proposer might be the same as OP and suggested a request that accounts be merged.