I do think there is a point to having a separate topic, at least for now, on the new changes.
Well as far as the shield generator shot goes it’s not bad but they could have simply cut from white flash and then to the actual trailer footage of the explosion then to the AT-AT Window for the remainder of the explosion sequence so it was never really needed.
But I suppose you can argue the case for seeing the troops running into the direction of the explosion back to base. So It’s kind of acceptable but then again the background plate the troops are running on was shown a few shots earlier to be way behind General Veers AT-AT as the snow speeder spins and crashes on this Background plate too.
So still a bit muddled up… Would have been far better to simply restore the practical explosion effect and alter the Background plate.