Guys, there is a bit of a problem with the Trial by Combat idea. What if Ned loses? If Ned loses then that means he was guilty all along and the case is over and done with. If Ned loses than what is Robb going to do? Ned brought up trial by combat, tried to clear his name that way, and lost. Robb can't go to war over that, it takes some wind out of his causes' sails. When trial by combat is over then the issue that it arose over is supposed to be settled I believe. The whole reason Robb went to war was because the Ned was seemingly unfairly taken captive and held prisoner. If Ned tries to settle this with TBC then doesn't the outcome of the trial determine who was in the right. And if Ned loses then he was in the wrong and the picture can be more easily painted with us as the aggressors, right?
Edit: Basically if Ned loses then doesn't that paint the picture that he was treasonous all along and guilty. Which makes it awkward for us to march on King's Landing demanding vengeance when it was all settled legally (and it was Ned's idea too).