I’m not sure I understand what you’re getting at here. Unless I’m missing something, cutting the shield aspect would have to be done in tandem with the retrieval of the map to Luke, otherwise Han has no reason to go separately from the main fleet.

As for the the shield angle diagram, are you suggesting Scenario B is Han’s plan, in order to stay under the radar the entire time? If so, It’s a neat idea, but I don’t know if the extra effort would justify the change since the handwave about the shields and hyperspace remains unaddressed.