How many would rebuy mw2 with mw3 changes.

My brother and I were talking about this earlier today. If IW were to release mw2 with the changes to the kill streaks, shooting down things and everything else that was changed in mw3, we would rebuy the game instantly. I doubt that this will happen but the maps in mw2 were just so fun to play and I really didn't dislike any of them.