Generating footage wouldn't help with the opposite but navigating a simulation would which is a pretty standard type of evaluation for multimodal AIs designed to act in the real world.
I can imagine a robotics architecture where you have one model generating footage (next frames for what it is currently seeing) and another dumber model which takes in the generated footage and only knows how to generate the motor/servo control outputs needed to control whatever robot platform it is integrated with.
I think that kind of architecture decoupling would be nice. It allows the model with all the world and task-specific knowledge to be agnostic from its underlying robot platform.