I think it would be a cool addition to the game if you could unlock skins for your medals that you receive in-game (double kill, assist, etc…) You could earn them in Req packs and they would have classic ones, forerunner themed ones, covenant themed ones, and whatever else they could come up with. Obviously it wouldn’t be a harmful addition to the game in anyway since you would be the only person who could notice it and if you didn’t like it, you could always stick with the default ones…