Hoping for a unified government on any scale is kind of like hoping for rain... be careful what you wish for. That is, it's not the Unified Europe you should be hoping for, but a Europe that can maintain sovereignty and individuality, and if such a unified force would be beneficial to its people.
That said, Europe seems to be unifying no matter what the people say, so my bets are on "it's bad" and I hope it doesn't happen.