: One for Campaign, one for multiplayer. Problem solved. It worked for Halo 4
: and even for ODST. Or is having multiple discs considered passe now that
: Xbox upgraded to Blu-ray this gen? I'm wary of these kind of mandatory
: updates needed to play significant chunks of the game. What happens if my
: XBO croaks 15 years from now and the XBO's servers aren't running anymore?
: Even ignoring this issues, a mandatory 20GB day-one update sucks for
: people with slow internet and especially those with low bandwidth caps.

Two discs in that setup would defeat the purpose of a unified user interface. What I would expect is a second disc to install the additional content like they did with Halo 4.