I have been wondering on this concept mainly because once 343 industries got halo reach servers they shrunk the size of the amount of players that can play. For example invasion and big team battles could hold up to 3 guest profiles but they soon lowered it to 1 guest profile.
Yes, but only one guest in War Games globally this time round.
Allowing four players per console in Halo: Reach was the main reason we couldn’t have Forge maps in a lot of playlists.