If there's a good suggestion, it'll be sucessful. Downvote bridgates are mythical happenings that just aren't real. If you feel persecuted, or feel like there's some group of people dedicating time only to tank your threads, then maybe it's time to take a step back and look at your approach.
Anyway, this new feature is sort of like change.org's approach to petitions. If a petition reaches a certain amount of names, the US government makes a comment on it. Doesn't really affect whether or not the change is made, just adds a bit of communication and transparency to decision making.