Angel: You'll notice that you can see all 3 engines on the bottom in the fleet intro shot, whereas you can only see 2 engines on the bottom when the Executor leaves the asteroid field:

Regardless, for all intensive purposes, it may as well be the same shot, as it is essentially the same angle.

Frankly, I personally like Angel's image below as an alternative:

Even so, I can understand the Executor having it's 2 standard escorts, as most large vessels (such as aircraft carriers and battleships) always have escorts for various reasons. Now an alternative possibility could be to show the 2 SDs (one on either side) move up and to the right as, after they help guide/escort the Executor out of the asteroid field they peel off to go right back in to continue the search.

Also, would it be conceivable to show laser fire and/or explosions in the far distance inside the asteroid field to show something of the fleet's presence within it?

In regards to another point Angel made, I know you would not be able to use the detail on the underbelly (in the 2nd shot) for the shot above it, as the bespin shot is further up the Executor's body... but I could also see the entire Executor replaced with the flipped Bespin shot, so as to give it greater detail:

Such as this:

Even so, would it be conceivable to add more asteroids around the Executor, as well as hitting the Executor shields? Not so much causing damage (as the Executor shields would be powerful enough to slog through without taking damage to the ship itself), but again to show how congested the asteroid field is?

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Some more general questions:

(1) In regards to the Executor itself, will the lights on the nose be changed to blue to match the rest of the Executor lights on the side (for consistency) or will they remain orange/yellow?

(2) When the Falcon is flying along side the Executor at the end, will the side be darkened and have lots of blue lighting added to match what we see in all previous shots of the Executor or will it remain the same?