Phil Spencer did say that Lost Odyssey and Blue Dragon were important games to get running to him, and that they're trying to figure out how to do multidisc games. I'm just hoping it's sooner rather than later.
I don´t think Multidisc is such a huge problem.
They just haven´t implemented it when they launched BC.
The (really) hard part was getting the emultion to run.
To figure out how they bundle 2 game discs in one and only show one game tile should be pretty standard stuff.