If I am not mistaken, this suggestion is not new at all, it's one that several users (including myself) have suggested to the admin in the past, and I personally believe that admin have taken note of this and possibly have added it into his to-do list.
Building the forum is not easy, so, we must give the admin enough time to build and implement all the suggestions that are good and would bring progress to this forum, like this one, asside the fact that this has been suggested multiple times before like I said earlier, this will always remain a good suggestion and one I would alwsy support, the feature can be made to just show the number of Karma (positive or negative) a post, or comment got, without revealing who gave it.