With all do respect Mystic, everyone, and I mean everyone, knows that Reach takes place long before the Halo series as you point out. Halo 4 follows Halo 3 and you are playing as the Chief again, not a Noble team member. The Chief does not need AA's from the "distant" past, he never has before. By calling Reach a "stand alone game" I was referring to the fact that you, for the first time in MM are playing as some one other than the Chief. Players should be willing to accept the fact that the AA's will not continue beyond Reach is all I am saying.
You refer to polls that are in forums and different sites I assume. Many players of the game never join sites like this and therefore never vote in polls. Almost 9 million people bought Reach and less than 100,000 continue to play it. That is a vote right there. Hopefully they will return when the particulars of Halo 4 are shared and it hits the market. The people who have given up on the series for now are no less or more fans of Halo than any who currently play Reach. It appears that a majority of players who play Reach do like the AA's in one form or another. They are not the entire population of the Halo fans. Yes you will here more props for AA's in current forums because of the active population playing Reach.
I accepted long ago that Bungie was trying to bring something different to the franchise, but like many saw Reach as to big of a departure from the original. There is not a desire from anyone I know to play the "same flipping game" over and over again. Time passes, graphics improve, advances are made in both gaming technology and in game story technologies.
Last, if you honestly believe that the game play changed "just a tiny bit" from H3 to Reach......I do not know what to say to that other than it was a wholesale change.