One of my favorite novels from from the EU is Darth Plagueis. One thing that I've often wondered is, did Plagueis really die? There's some ambiguity at the end of the book whether or not Palpatine succeeded in offing his old master, and this has always had me wondering if Plagueis actually is dead or if he is still floating around out there in the galaxy somewhere. And if Plagueis' soul who lives on, what would he do? In the wake of Palpatine's dead, would he still scheme to rule the galaxy? Would he still stir up trouble as when he lived? And if so, one would that mean for the New Republic and the New Jedi Order?
Plagueis was totally focused on living forever in his own body. I think I remember the novel stating that he had no interest in transferring to new bodies or living on as ghost of some sort. If he did survive, it would be by somehow reviving his own dead body.
I strongly feel that... if there was NO canon reboot/Disney sale/Sequel Trilogy... the next big series would be Plagueis in Post-Crucible times.
Plagueis was dead, Palpatine sensed it, and there is no evidence he survived, we see him dead in the prologue of his titular book.
Who cares about Plagueis? I want to hear about that life form he created (Snoke?) and who he cared about he saved from dying (maybe it's Snoke too).
No, in-universe SW logic says that Sith relies on physicality, not spirituality. Being a Force ghost means nothing to them. They only care about not dying and surviving with their physical body. Since we know Sidious checked out Plagueis's death body more than once, and then he even burned him and turned him into a vase, so no, Plagueis didn't survive.
Unless we want to believe that Plagueis spirit took control of Palpatine's body, as people believed after dynasty of evil was released with Zannah and bane.
Plagueis moved to Earth, leaving Muun Fan Hill, who looks a lot like him, to get killed by Palpatine. Plagueis got surgery to change his Muun looks to human (I heard he purposely altered himself to resemble young Dooku), then changed his name to Dracula. Plagueis then used his powers of stopping people from dying by drinking blood to a great degree on Earth.