Spartan Ops is all well and good in theory, but the problem is can you really sit down for a marathan gaming session and play 4 or 5 hours of it and then do it again the very next day? The answer is quite simply no. Once you know that mission, you might choose to play it two or even three times, but then what? You're not going to keep going back to it as you did Firefight. For those of us who would rather avoid competitive play, this means that their is little replayability in the game and that we'll be left languishing in the lower ranks with little desire to pick the game up again. This could well turn into what happened with Mass Effect 3 multiplayer, where after the intial surge, you simply slipped the disc into the console every other weekend to complete the weekend challenge before then going on to play something else. Hopefully, when they look at the numbers that are playing the multiplayer in Halo 4, as compared with Reach, they will decide to bring Firefight back as DLC as there is no way that people will continue to play Spartan Ops years down the line as they did Firefight.