What additions to Halo 6's campaign would be cool to you? It can be anything from plot points, characters, or the music, or the environment. How would you want it to be like?
The only real big idea I had was it is split between 3 teams: Blue Team, Osiris, and The Swords of Sanghelios. That team has Thel 'Vadam, Rtas 'Vadum, Makhee 'Chava, and Tul 'Juran.