Remember kids: when you fill out the online surveys, you are not "voting" for your favorite game mechanics. I doubt very seriously if Wizards of the Coast is keeping track of the number of people who do/do not like Vancian magic, for example. They are most interested in whether or not we had fun playing the game. So campaigning for (or against) a particular element isn't going to get you the results you want.
I disagree, from what I've read they are very receptive to the wishes of the majority. They'd be foolish not to, if they completely ignore us on the one extreme, they'll fail miserably, but if they bow down to every idea or flame war on the other, D&D Next would probably also fail. A happy medium, with some fresh ideas and a good synthesis of all the good stuff from various editions, could come together nicely.
My opinions on various topics has changed over the years, sometimes back and forth...a cogent argument from any perspective has a better chance at swaying me, as I appreciate a well-reasoned argument over just foot-stomping or tantrums (though I've been known to get way over-zealous about "trivial" things like game rules...but that's what a "fan" is, a fanatic).
Getting real metrics, even in the imperfect form of a poll, can help guide them, or even provide surprising results that you didn't know about your fellow gamers' stances on certain issues. Then when they make certain decisions and a vocal minority bitches about it, they can point to the poll and say "it's what the masses want, suck it". That's if it's an overwhelming majority in one direction vs another.
Like, for example, surges needed to die a horrible death. Light armor wearers need to have much lower AC than heavy armor wearers. Martial dailies and "powers" in general needed to be removed from Core. Etc.