I chose 3v3/4v4 because I can definitely see why ffa wouldn’t be any fun for novices. I can just see it now, all of the map exploits and people racing to get the best hiding spot. Well… that’s what I would be doing anyways.
Teams are fun. 2v2 is okay but it can sometimes cause problems, especially if that one person you practiced with decides to NOT SHOW UP. Bigger teams can also bring more players together overall and not leave one person doing all the work (if your partner happens to be not so good at Halo).