So the level split is 12 osiris 3 blue team. While at first I was annoyed a bit to be honest but then I though about something. Almost the entire campaign for marketing has been about cheif being seen as a traitor, even though hes more than likely doing what he feels to save the galaxy, and human kind.
Now bring that into the game, we play mostly as locke and his team, hunting cheif, without truly knowing exactly what hes doing or why.
My theory is even us as the player will be somewhat in the dark, and in the last few osiris missions we will begin to see major -Yoink- hitting the fan. And locke begining to see what blue team have been fighting for. And then the last mission is chief and blue team TRUELY fighting with the unsc what is coming, and then they realize he has been disobeying them to fight this threat. Then in halo 6, since the truth will be revealed to us as the player at or near the end of 5, so 6 is focus on chief saving the galaxy again. And in 6 osiris being there but not the main characters.
Thoughs? Honestly with all the secrecy and such, this makes sense in my head, and finding out the 12/3 split, it makes sense to me. Only means 6 will be all the more epic