I am going to suggest it. Suggested: http://www.mineverse.com/threads/forums-ratings-on-suggestions.88278/
I see what point you're trying to make here, but honestly, on threads such as suggestions and apps, there is no reason why someone should be able to interfere with another person's reply with ratings, since it's only YOUR opinion you are posting, you aren't the one to judge other's opinions. I'm just saying this because people will probably be giving others many negative ratings just because of a 'No support' and such...
Since people disagree and agree on opinion threads, mostly suggestions, people could rate farm and do stuff like this: Rates dislike or disagree multiple times on all posts on that thread because he/she disagrees with the suggestion. Rates winner/like/agree/friendly, etc., just because he/she agrees with the suggestion. It gets kind of annoying when you are able to do that and you get rated for no special reason.