I agree it would emphasize something already quite clear: the Republic has just been destroyed, now they prepare the next step. No time for celebration or else (it’s not as if Hux and Snoke seem to be the friendly kind anyway). Adding a dialogue is a good idea on paper but here it works without it (and for pace even a few more seconds can make a difference). If possible I think the best option would be to add a shot of Hux “smiling” when the Republic is destroyed (into the “destruction montage”) but I don’t know if there is enough material to add such a shot. I like the sequence as it is in v2. It flows well and there is nothing jarring.
Is Hux body going to be more cropped in the “begin charging weapon” shot by the way ?