So it's not really likely that Blizzard will implement in-game polling anytime soon-- for now, they're content to get their player feedback from the forums (and, I suspect, from sites just like this one).
However. We here at WoW Insider have no such compunctions, and we love to hear your feedback in terms of numbers just as much as in the comments. And I especially like Antiquity's poll suggestion, so here it is. Yes, this isn't really a solution to what he wants-- he wants to hear in-game voices, not forum voices or WoW Insider reader voices. But it is an interesting question, and I would like to see what you all think.
(I did leave off the "All of the above" choice-- if that was on there, I don't see why everyone wouldn't choose it. This way, you're forced to choose your preference.)