If you walk into a sim assessment and you dont have a good scan it will be game over. Full stop. End of. You can be the nicest guy or girl in the world, it will matter not.
A basic good scan is essential. When those flight directors are switched off and you have no experience in flying a jet hands on, it is the very thing that will get you through. No where to hide if that basic skill is not there.
To sum up I think its a good thing to incorporate in as much hand flying in an MCC course as possible, without neglecting the CRM element to an unacceptable level in doing so.