I got to attend his coaching seminar at USC this year and McVay is very open about running the same few plays out of different looks. He showed Robert Woods and Gerald Everett running the exact same route combo's on 5 plays from 5 different formations. Their intent is to get the defense to (incorrectly) react to the shift and motions, allowing them to exploit a mismatch. When Jerry talked about Moore's promotion he suggested that's the direction the Cowboys are headed in. The issue is the route combinations still have to work, the "creativity" part. You need to install mesh concepts and make sure the QB and WR's are reading the coverages the same so they are on the same page.
I never suggested unleash the full playbook or even a bulk of it, but training camp and the preseason is an installation of your offense (and defense). It's building blocks. I didn't see a single thing different with play calling or play designs tonight. Again, "vanilla" is understandable and the expectation. A completely different flavor is not. The Ravens aren't running spread, they are installing a run-heavy stack with some options of triple with it. The Rams aren't going to show you anything special next week, but at the same time, they aren't going to run straight I formation next week. They will run elements of their offense.
For you two who keep harping "show nothing at all"..at what point do the Cowboys install the offense that they plan on running for 16 games?