You have created a game that will keep people wanting more based on the reward system. It will require some tweeking as time goes by but genius non the less. Crucible is great although many of your fans are Halo addicts, i believe a capture the flag is in order or more vehicles. It does change the game but it could be similar in the sense that it is isolated to certain levels. Another great idea is iron banner. The more experienced and elite get a chance to battle it out. I would like to see a chance for gamers to pick their levels and have a battle with friends as well. Clan Battles or Fire team battles, where we can pick the levels. Congratulations on your success with this game it is well deserved.