Here’s some idea I have for Halo:
1- A social hub (like destiny’s) where you can meet up w/ your friends and form a fireteam, us it as afire team menu, be able to have a private hub, it looks like a unsc space ship
2-And end animation for warzone that shows the simulation ending/dissapering
3- make golden pack have better chances for cosmetics like skins, armor, assassinations, stances, ect.
These are items I hope to see in you game 