You could add TIEs, or you could add a still image of the Finalizer floating in the sky far above them. Might be easier effects-wise. You could maybe even show little specs flying out of it if you wanted, as if they were TIEs and transports. Also making it just the Finalizer, as if the fighters have not made it yet, could help explain why no one is running yet.

Something else I think would be interesting to add (while not really necessary at all), is some lines from the first teaser. I always liked when Snoke mentioned the awakening, he specificied it being both the dark side and the light. I thought it would be interesting to add that to his conversation with Kylo. Especially if one were to omit the Han Solo reveal, Snoke mentioning “the light” would add some context to Kylo saying he won’t be seduced.

The only problem is that while Snoke saying “and the light” is clean, “the dark side” has a lot of background noise that would be hard to take out. Alternatively, you could have Kylo Ren say either “the dark side” or “the darkness” as he says both within the film, then Snoke could retort with “and the light”.