In halo I don't know how people didn't include this while playing infection. Since halo 2 everyone hated when they got picked to be the infectors same is with halo 3, reach, and 4. For halo 5 I want infection to be like halo 1 campaign. So my idea is that everyone begins the game as a spartan in a small dungeon with everyone else. As the game begins waves of flood spiders(or what ever there called) begin to attack and all must try not to get infected by them. As people get infected they become flood/spartan players. Then they spawn and break down doors that continue into the map. The more people get infected the bigger the map becomes. Then when the time runs out or everyone gets infected the game is over. This is my opinion and know it will be good fun with all your friends playing this game type.