Another good thing to sit on is this:
Games with a low availability take longer to get to you, so they give the next thing in line until the game you "want" can be reserved and waiting just for you.
If you don't want the games you have in your Game Q, then delete them. Start anew, Dog.
Or, like Mr. Ngo said; cancel your membership.
343 (Halo Waypoint people) are supposed to be taking over the Halo-franchise-thing. So, most likely, there will be another Halo. Will it follow one, two, and three's story line? Who knows.
I suppose we'll find out, eh?