When will you fix coop-campaign?

I love playing campaignwith my friends. But it is so frustrating when you are close to finish a level and the game just aborts.

My questions:
-when will sou fix random game aborts?
-when will you fix the frozen screens in coop?
-how is it possible, that every coop-player (exept of host) has a delay when shooting or jumping, but on the 360 with halo 3 everybody has a connection like in local play?

when will you focus on that? Maybe better: will you ever do?