A new game mode where you earn something in game to buy card packs containing weapons, attachments, camos, perks, kill streaks that have a limited number of uses and only can be used in that game mode. Include special versions of the guns/grenades doing more less damage. Have a draft type mode, each player gets two packs to work with. I think it could be awesome. The game makers could trial new guns in this mode as limited edition. Sorta like the MUT mode in Madden.