Don't really have anything to add but i would just like to say i love 'your' idea
As many, and probably most, of the fans of this game I have lots of ideas in my head about how i would love the game to be, but i know that most of them are unrealistic or not shared by the majority.
An in game poll system would be a brilliant way of allowing people to express their opinions on how to move the game forward and in a way which bioware agrees is possible.
Really hope this idea gets some big attention.