...is that I felt the creators decided the new trilogy will reference the prequels as little as possible, for various reasons. And Plagueis is this big boogie man Sidious used to turn Anakin, as we all know, which makes him a pretty substantial part of the prequels without ever showing up. So I have my doubts, but of course I could be entirely wrong. I actually like Paul's idea that he does not really exist beyond the holo, or there is a Wizard of Oz thing going on here. Which I'd love because I wasn't too fond of his look. Either way, they're gonna need a really good reason why this ancient guy did not play even the slightest role in the OT!
That's an interesting point you bring up because one of the main theories behind Plageuis and the choice to use him is that they want to validate the Prequels that are widely considered to be unpopular. If Plagueis did return the whole series could be watched with a much greater meaning and appreciation. The annihilation of the Jedi, and bulilding of the Empire all as part of a much greater master plan.
The holocron idea I'd like too, but it could also be something horrific. Like Snoke is someone pathetic, or worse it's something conjured up by Hux to control Ren, or vice versa. God please no.
Fan of Lanfear