You have a valid point it could be the matchmaking servers themself, which would explain the issues with lag at times. But that would not make sense to have them only over there for all of the world to have to connect through when searching for a game..
That sorta what I said before. The only problem I see with doing that is if it is an xbox live function, there may be an inbuilt security feature in the xbox itself that reports you if you block it, hence the possibility of a ban for evasion of security features
It is the stat/theater servers and matchmaking servers. they way that sounds. Which means elite too most likely. maybe part of the lag comes from the demonware servers becoming outdated or over burdened.