In delving deeper into some of the scarce details surrounding Halo 4. My main observation is that 343 is looking to incorporate some meaningful progression to the Halo formula.
This is the one thing Halo has been missing that cod and other successful games possess.
In reach they added credits to buy armor, but the armor had no impact so many gamers were not engaged enough to continue playing. With the Spartan points and the ability to purchase armor and as ECT…people will have reason to continue to play.
Just my thoughts.