I would like more hidden content in campaign. The terminals so far have evolved from text to video, why not take it one step further and make terminals hold playable levels! Some sort of 'mini' campaign that parallels the main campaign. A cloaking ability that actually works would be a nice addition, no radar jammer, move faster before it weakens, and much weaker shields. I may catch some flack for this but I think sprint should be a player trait. It should be changed though such as causing weaker shields and the motion tracker to go haywire. But once again I want a ton of hidden content in campaign, or at least enough to keep the Halo community trying to find everything for at least two days And a longer campaign, maybe 15 missions per game.