I have already suggested this. Cyp has looked at my thread but it doesn't seem he is interested in adding it.
Why have an additional rating for people who simply read a suggestion, and decide to ignore it because they're neutral on it? I'm not entirely sure why a neutral rating is needed. Except, of course, if you're simply eager to state how neutral you are and how much you do not care for either outcome on a suggestion. Don't get me wrong, it just sounds a little pointless.