dragonelite
Veteran
Another interesting one
If all 3 are installed and only the first 1 needs to be in the machine to eliminate disc swapping that would be nice (but I think we've had this discussion before and unclear if Microsoft allows this). I have I think 57GB left on my 120GB 360 so it could fit.
Forza 3 did this 2nd disk acted like dlc pack.
So maybe the waste lands on disk 2 and 3 can act like dlc and to play from hdd disk1 exe is needed.