What do you think of giving the Bitcoin Community at large a voice instead of relying solely on the miners?
In the end, it doesn't matter how the vote goes because nobody is bound by the results of the vote.
Same way as nobody is bound to install a certain implementation. Asking only miners makes no sense as bitcoin is more than mining. They are important, yes, but they alone are not bitcoin. Anyone that holds coins should have a vote and since we can sign messages we can make it happen. Miners can vote on created blocks, holders on the amount they hold and businesses and exchanged by the amount they hold for their customers or themselves.