Really enjoy the mod, has been one of my favourites since the early versions.

One suggestion I had would be to have a War mode chosen from the same menu as all the other options (sandbox, random, start at round 1, etc).

Essentially a mode where you have a full complement of allies working with you. It could be as simple as having the reinforcement script (normally used for boss waves) just running constantly throughout the match.

Obviously would be ideal if it could still update to reflect what bosses you have killed, but even if not, just having an army of UNSC forces with you (without having to spam the secret button) would make for an interesting twist on the mode.