That's not a patch. It's content. The game is designed to run as a single, unified product, digital is seamless obviously, but we also wanted disc users to have the same experience, without swapping discs. Since the bulk of it is MP or MP related, the logic is sound. There will ALSO be a TU in there, but that in itself is a tiny fraction of the content.
We realize that this isn't ideal for everyone, but it's the path to the smoothest eventual experience.
Mind if I ask you what your specific problem situation is? Disc? Bandwidth cap? Slow speed? Just curious and would like to provide deeper guidance.
If fixes were required for Campaign, they would be very small, but that's not the case. All four campaigns will run directly from the disc without the content update. As will some custom game features. Again, the bulk of the CU is MP and MP related.