Especially if that’s the case, it wouldn’t do anything to merit any of the chipper attitude at the end. All it’d do is offset the ‘revenge’ motive for the trench run, and even then it wouldn’t since the fighters would be unaware.
Maybe the dialogue between Hux and Snoke could be considering their next target, just enough to imply that it’s important this thing be destroyed.
Although, having the base about to fire again would address the apparent “problem” (only for those very aware of the theatrical version in which one star equals one shot) of SKB exploding into a star after it had discharged.
I think that if the audience is aware of the threat to the Resistance with the Snoke dialogue and the inclusion of ‘Prepare to fire’, the revenge aspect of their attack is pretty much mitigated. If the audience understands that the base can fire several times from a single charge, we could infer that the pilots at least suspect that possibility as well.