I kinda agree with Darth Stewie...

Think of the Emotional High that we ended STAR WARS with...

To then, in the next film, be pushed into utter despair in the first 30 minutes I think would be an amazing thing... it would darken the film...

Maybe if, like he mentions, have laser bolts just firing everywhere... almost like in the battle of Geonosis....

And maybe if you could find a way to incorporate AT-ST's, it would be BRILLIANT to somehow show the sheer speed of THOSE compared to the AT-AT's... yes you have a few AT-AT's... but if you had a bunch plundering about, constantly firing...a nd AT-ST's walking around, firing a metric ton...

Even perhaps speeding UP the walkers ever so slightly... if you could speed up the movement, and slow down the step... FAAAST boom (slow)... faaaast (boom) slow.. It could give a bit more dynamic.

I think THAT'S what the scene could use is dynmaic.

I'd mentioned before that the Rebels have thos ebig guns and turrets but you barely see them fire... perhaps seeing more of that..