We SERIOUSLY need to re add Split screen. It has been on ALL the Halo’s, why take it of Halo 5? Now me and one of my siblings can’t play co-op. We have played all the other Halo’s together. I am furious that it splitscreen is not added to Halo 5 but it had it on all the other Halo’s. Please can you tell the Bungee or 343 team to re add it? Me and my sibling would like to play Halo 5 together. I am VERY Furious when i found out.
I think 343 has confirmed it will not be added in future updates to Halo 5, but they are considering it for 6.
bungie doesn’t work on halo titles anymore. and for the record halo wars didn’t have split screen 
Bungie had wanted to take out since halo 2. It is actually makes the the game really hard to develop. You have to scale the game downward to include split screen
Split-screen is very unlikely to land in Halo 5, this has been mentioned a few times in the past by 343. For any further thoughts and discussion, please refer to the splitscreen megathread 
https://www.halowaypoint.com/en-us/forums/6e35355aecdf4fd0acdaee3cc4156fd4/topics/official-split-screen-thread-v4-0/27262665-037d-4b00-b3a8-5c4c4b07e168/posts?page=1