I agree with you Skywalker. As someone already said its only value would have been for a shock. After which there would have been nowhere to go with the idea. "Everything you thought you know is wrong! Ain't your mind blown???" I hate stuff like that. Particularly when you know no real thought or plan went into it. Many of those wishing for that ending now would have be the same people disappointed in its payoff in future movies. Due to building up a gimmick in their own minds to be more than the writers intended. I've seen it happen numerous times with these types of things.