If we cant get a simple raking system like the one in Halo MCC then how about a we get a Spartan companies interface in the game.
Imagine, making a clan with your buddies and people you meet along the way all working all towards daily/weekly/monthly goals & challenges and achieving a super rare armor core like the Achilles armor.
Spartan Company commendations /Challenges
Halo Infinite has the Core system, this would work PERFECT!