I've had some ideas for Halo, in the form of game modes. Including a Capture The Flag Mode. A "No Hold's Barred" meaning, Team Deathmatch where rockets are actually allowed. A "Domination type mode" where teams capture objectives from eachother simply by being in the vicinity. Or maybe flipping a switch that changes from blue to red and back again depending on waht team flipped. A "Gambler" mode where instead of winning a flat rate of coins for wins and such, you can bet your own in various intervals. Maybe having several rooms for different amounts. A 1000 coin room, a 10000 coin room etc. A "Control Point" game mode like the one in TF2. A "Firing Range" where you can try out weapons that you would get in the future. i.e. A person curious about the rocket launcher can take one to the firing range and try it out. A "Siege Mode" game where one team is tasked with defending a fortress of some kind against the other team in a best of 5 game. A "Duel" mode. Any other ideas?