Thoughts on what Infinite infection should be like

I would personally like to see a sort of last stand game mode were instead of a beginning zombie it starts with AI, either in waves or constant and when a Spartan dies (or if infinite let’s you play as something else) you join the infected it would also be nice to have a option in game settings to turn on something like the Halo 4 or H2A or if infinite has a new Spartan flood look and a normal one (Spartan with energy sword or another weapon) to be able to do more with custom games. What’s your thoughts on what you would like to see in infinite infection?