What exactly is changing with Chaos?

Protection scrolls should come within the 5 patches.

Cash Shop items, unless tightly bound to in-game content (i.e., Evan skillbooks to Evan class release, or Cubes to potential system), don't always appear at the same timing in GMS as in KMS. Some things we never get at all, like the second pendant thing.
Hopefully you're right, though, and we will get those scrolls shortly.