Or they could have been piloting fighters alongside Kylo and one of them, after sensing his hesitation, was the one that blasted Leia into space. Maybe even have him be seen leaving Snoke's throne room at some point, which one could infer was after he'd narced on Kylo. It would also support the narrative that they were first & foremost loyal to the Emperor.
That definitely would have been cool though for whatever reason I was still fine with them being just cool looking "grunts" as well.