It's your baby Ady so it's your call.

But Lando and Chewie not noticing is only an issue if that particular cockpit shot is used.

If you drop the shot the Falcon is still being nudged in range of The Executor tractor beam just without the need of someone pointing it out.

Another possibility I thought about was trying to have Leia say something else like "Vader" (something Carrie must have said many times) and keeping her pointy hand down and just have everyone look up at the spot.

As a related side note, Vader disperses the fleet as a ruse to get the Falcon crew to think he doesn't know where they are so Fett can follow them.

There is no reason why he couldn't have called at least some of the ships back which could make for a more pleasing shot composition.

The Executor is a beautiful ship when it fills the frame but as a lone dart in the distance it doesn't look very imposing flanked by a few more ships it might look a little less feeble in that particular sequence.

Skywalker is Vader's main prize but Leia is still a major Rebel leader and making sure he gets the full set would justify using more than even his flag ship to secure his prey (the Falcon did manage to get passed the whole blockade on Hoth and the surrounding asteroid field).