I won't sign this. The Wii U needs games and actual advertisement. And while I do think NN should have universal voice chat, because it has no excuse not to, I do not think that is why it isn't selling. Marketing is especially important because people have to know that your product exists in the first place, something that can be easily remedied....
I agree that its marketing is not enough, but you're not signing it just because I did not include it in the petition? That's just silly...