Guys they announced Halo 5 is going to be locally single-player only. Sign this petition to change that here: https://www.change.org/p/microsoft-343-industies-bonnie-ross-kiki-wolfkill-microsoft-studios-add-split-screen-co-op . Be a part of the people that keep Halo the way it's supposed to be!
People didn't even care until they said that there wasn't going to be split screen. TBH it isn't even a big deal. I'd rather it look better than let me play with someone else locally.