In Smackdown vs. Raw 2007's GM, the main event of Survivor Series is always an interpromotional Hell in a Cell match. Raw chooses one person, Smackdown chooses one person. When my friend and I would play it, we decided it'd be boring to just like randomly pick wrestlers with no build, so we always made it between our brands world champions, with the stipulation that the losing champion would be forced to defend their championship on the following Raw/Smackdown. Since WWE decided to do this Champion vs. Champion thing with Survivor Series, I always wondered why they never added this consequence. It adds stakes to matches that don't really have them, and it provides extra incentive to watch the following TV episodes considering they'll have Championship matches on them. They don't even have to follow through and have any of the champions dropped the belt, I mean yeah that would be lame, but it would at least present the illusion of consequence and would add more meaning to the bouts.