Very nice idea. Nicely implemented as always. I just launched FeedMonky.com it summarized the feedbacks automatically. But voting is a fantastic idea too. Simply and quick.
Great application that looks good too, I plan to use it in one project but I encountered a nasty bug. Try to create a suggestion called test and open it.
It's hard to say yet how it's going to perform in action, but the "onboarding" experience is fantastic. Created board for feedbacks in few minutes :) Great idea