Frivolous Fandom Thread

Possibly. But in order to avoid getting devoured whole on their first day in the Milky Way, they should be ISOTed to a relatively quiet, preferably resource-rich area where they can lay low for a (long) while, harvest raw materials, and gather ever-vital intelligence about who else inhabits this new galaxy they've been sent to. If they're wise, they ought to avoid detection--let alone conflict--with the established factions of the 40K universe. Otherwise, my money is on them getting creamed almost upon discovery.

Additionally, I wonder how the likes of Kylo Ren and Snoke would react to the Warp and the Psykers who draw upon its supernatural energies. Whether they'd be prone to drinking the Chaotic Kool-Aid is also plays an essential role in how the First Order fares in this parts.

Agreed. There's only, what, somewhere over two million people on the entire Supremacy--a number nowhere near enough to stand against the constant waves of Imperial Guardsmen, endless hordes of Orks, supremely vast Tyranid Hive Fleets, etcétera.

Even with the needed cloning expertise and infrastructure that'll take more than just a few days or weeks to plan out and actually construct, the First Order forces won't have the sheer resource and population base of the Milky Way's main factions (i.e. the Imperium of Man). Since I doubt that they can match their newfound enemies' numbers anytime soon, it'd be best if they stuck to something along the lines of hit-and-run, guerrilla warfare in cases where they absolutely have to fight, which they should otherwise do their utmost to avoid whenever possible. Furthermore, I don't think they should squander precious labor and industrial capacity on something as cumbersome and resource-intensive as another Starkiller Base, which isn't guaranteed to work anyway since the hyperspace that the original relied on to do what it did best likely doesn't exist in the 40K universe. And building a Death Star clone instead won't solve the problem, either.

I think the chemistry between Data and Kirk would be different then what we know of from Spock and Kirk.

'Darth Plagueis Resurrected In 0 BBY'. He was Palpatine's now-deceased master for those who are unaware, and being brought back to life would give him the chance to behold the Galaxy that his former apprentice has brought into being.

And since this scenario occurs at the beginning of the Original Trilogy (and Plagueis will need to gather his bearings and assess the situation before acting), maybe a certain Skywalker's initial journey will proceed much the same to the point where once he destroys the Death Star, the newly resurrected Sith will, shall we say, take special interest in him.

Likely not. The remaining vestiges of the free Galaxy will have to worry about taking a power-hungry Sith like Plagueis out in addition to the Empire they're already standing against. In fact, there's risk that the old Muun might seek to turn Luke Skywalker (and/or Leía) to the Dark Sid himself, since he'd sense their sheer Force potential.

That, and if Sheev P. finds out that his master has somehow come back to life and is still around in defiance of the Rule of Two, he'll doubtlessly go to great--meaning absolutely terrible--lengths to ensure that he once again dies and permanently stays dead this time.

Yes, Palpatine betrayed and murdered him the first time around. And since he's too entitled and risk-averse to do the dirty work himself, it's reasonable to bet that Vader would be sent to put the old Muun down for good, as you said.

That’s where I can’t predict whether Vader wins such a fight or not. And if he defects by siding with Plagueis, how can he be certain that that he won’t be betrayed once his usefulness is deemed to have expired?

It’s already bad enough that the Empire would have him hunted down and destroyed for his treachery if they ever found out that he defected. And Vader’s in especially deep danger if he acts as an agent of Plagueis while pretending to go about his usual duties as Imperial top brass member. Those times where he actually has to interact with Emperor Sheev would be even more perilous.