I really wish you could trick the game into thinking you unlocked everything with this. Maybe there will be a method in the future like with Dead by Daylight which used server side saves. I really hate this stupid unlock system. I already did this grind back on Reach for 360, now I have to do it again and without even picking the things I want to unlock. Only reason they threw it in there is to keep the community numbers up. This happens with almost every modern game.