5 COULD be useful if Vader has issues getting the Emperor on the line in TRSB and gets God.
Adding there.
That’s the kind of uses I thought having more Star Trek movies on hand would allow for. Also it’d be funny if he then tunes in to a hologram of Gorignak from GalaxyQuest (since in 5 Kirk and company were originally supposed to find and fight rock monsters), before finally getting the Emperor (who should jump between original and SE Emperor footage throughout, I’d think)
(but these suggestions are, admittedly, not relevant to this particular thread…)