According to the software giant, Halo 2 is a major factor contributing to certain changes not being made, for example the 100 friends limit cap. Original Xbox titles have this cap hardcoded into them, and so they’re unable to make the changes.
Shutting down the Halo 2 servers will remedy this however, and Microsoft believes that with two Halo shooters available on the 360, gamers will forgive them for it.
Unlikely, as there’ll definitely be some to take offence, but it all boils down to what do you want: more friends, or Halo 2?
