We need a PvE mode, I know the game is rated 12, so have the enemies be robots, but think of a Horde Mode, because your gunplay is great but sometimes I don't want to play PvP. You could do a gears of war style horde mode, or a Horde elimination mode, where you turn on team killing for the last 2 survivors, and have really dramatic music at the end of the match. Or a form of a Helldivers Extraction shooter mode, and you could mix it up by having multiple teams trying to beat the same objective having a mix of pvp and pve in one mode. I know a lot of people miss Halo 5's Warzone, so try and get them into the game.