I’ve seen lots of people being excited for the potential for flood firefight, but what about fighting against the UNSC? Every big-time halo player has had some accident where a stray bullet kills Captain Keyes and the marines start shooting at you. The UNSC are a fully capable faction complete with Marines, ODSTs, and Spartans (which would be beefed up and function as some sort of mini-boss.)
I’ve thought about this for a long while, and you probably should still start with the classic assault rifle if you’re on the team that needs to survive. So what if you spawned in as your customized Spartan, but Team 1 is changed to be a Black team (which would be insurrectionists), and Team 2(UNSC) is also Spartans (but a Green color [a Green that looks like the UNSC, but doesn’t look like a failed clone of Master Chief] to try and make it more realistic).
Just curious, it sounds like a great idea to me.
EDIT: neither this nor the more-popular flood firefight idea are intended to replace firefight against the Covenant, but as gameplay alternatives.