Ending of LOST by Daniel

This website is great to start off with. I have been on it since the spawning of it but have yet to post. I'd like to post something that has been on my mind since a bit of the Season 5 Finale.
It has been hinted on numerous occasions that the ending of LOST has been filmed. My theory is that we have already seen the ending of LOST. The scene I think it is? Well.. Here we go!

"JACOB: I take it you're here 'cause of the ship.
ENEMY: I am. How did they find the Island?
JACOB: You'll have to ask 'em when they get here.
ENEMY: I don't have to ask. You brought them here. Still trying to prove me wrong, aren't you?
JACOB: You are wrong.
ENEMY: Am I? They come. They fight. They destroy. They corrupt. It always ends the same.
JACOB: It only ends once. Anything that happens before that is just progress.
ENEMY: Do you have any idea how badly I wanna kill you?
JACOB: Yes.
ENEMY: One of these days, sooner or later... I'm going to find a loophole, my friend.
JACOB: Well, when you do, I'll be right here."

It makes sense especially if the time loop theory is correct.
I would love/hate it to be the last scene. I'd love it because I thought of it (haha) and hate it because it was too damn obvious.