I'm generally in agreement with those suggesting you go with the majority. Otherwise, honestly, what's the point of having a vote? Either way someone's going to be unhappy about something, and I feel like there will be less complaining in the long run if wings are added, even if they're simply decorative as suggested above. The 1/3 may be bothered for a while, but it's probably going to end up like the howl/roar issue. A vast majority wanted it, people complained for a while when we finally got it, but then people got used to it, stopped using it into the ground, and now it's just one more cool feature in the game. Yes, at first there will probably be a grand onslaught of winged animals everywhere, but I don't think ground-bound characters will go away. I know most of my characters were designed not to have wings, and I wouldn't start slapping them on everything just because they're there. Can't speak for everyone, of course, but I don't think it'll be as bad as everyone's predicting. Not for very long, at least.
Bottom line: It's majority vote, and most resulting belligerence and/or chaos will be temporary. Go for it.