Between, a lot of people on the web mentioned Kylo got his hand cut but it definitely is still there. Also some interesting facts about Snoke: A lot of famous youtubers made nice videos explaining stuff around Snoke and that it is very much likely for him to be Plagueis. I didn't know about the existance of some kind of book/comics about Snoke but on youtube a guy was reading/quoted info about Snoke's past.
So it happens that Snoke was present during the Originals and Prequels BUT...working behind the scene "as he always does". Also he "knew Vader is Luke's father" during the Original series. He was also a witness of "Fall of the Republic, Rise of The Empire and their Dawnfall". Whoever he is - he is definitely being around for a very very long time. I really would like to see them tie all this information properly with Plagueis "kicked EU history" in order to make this "unknown villain" someone to be worth living and respected and even feared - and the best way to do it would be for him to really be Plagueis.

Some hints:
- Disney removed a lot of Wookipedia info and replaced it with new one - for example they did remove...Plagueis avatar image...which means they are the ones to say how this figure/character will look like instead to maintain his "original (currently kicked away) species" as Muun.
- The throne of Snoke is very familiar with this one, which Plagueis is sitting upon during the training of Sidious in the EU. Snoke in TFA was sitting in a similar throne (not chair like sidious). The "throne" resembles power and such a solid one is definitely part of a castle or temple (sith one, similar to these in Korriban - the sith graveyard planet) He is definitely thinking of himself as someone to be "king" or on top of others but who bested him? Who else but his own apprentice...Sidious. That would really make the new movies be worth a lot by extending the future of the main/new chars but also connecting old info with prequels/originals and new sequels.
- Music played during Snoke appearance is same one used before Palpatine told the story of Plagueis in the 3rd movie with slight differences. Why was it so important to add this scene back then? To waste minutes of precious time to present "Plagueis" name like "Darth Random of Randomness"...back then was like "who is this guy?" Now we all fans know who he was. Would be nice to have this scene be like a "seed", that is now a "tree" aka Snoke. (Like a hint in the past about someone that was very powerful and thought to be dead...so there he is again - alive)
- Plagueis IS the reason Anakin to be born in first place, conceived by the Force, for what reason? I think he was ment to be the perfect "host"/vessel for Plagueis "who could save others from death but not himself" - so what if he found a way to make powerful bodies which later he infested with his essence (Sith had such a power to possess individuals)? In this book it was mentioned Snoke was very interested in Skywalker family. It was like he was following the family tree of Anakin (his experiment), perhaps looking where it would be weak enough to easily manipulate...and possess? Vader was too strong to allow such a thing and Luke was too pure and righteous, proved not to be easy to corrupt him (during the meeting with Sidious - the bulwark of the dark side)....but Kylo...that one already proved to be easily manipulated. Maybe we shall expect to see in VIII how he "completes his training" by possessing him and turning the Kylo in to a vessel powerful enough to shadow both Sidious and Vader combined.
- Plagueis was possibly the creator of the prophecy of the chosen one. We know the chosen one was the one he made - Anakin - but what was his legacy? "To bring balance in the Force"...the Force is both light and darkness not only part of it. So if Sidious turned the weight to the dark side, "side" scale, then the "light" would be diminished, close to extinction (the last jedi was Luke alone as part of the light side)...so...who turned the "balance to the force" ?? Anakin - by killing Sidious - the Plagueis apprentice. A lot of fans believe that Plagueis, before Sidious assault, has forseen this coming and did a powerful illusion (he had a knowledge to make force illusions where nearly nobody would say if they are real or false)? Perhaps in his final act he did create Anakin to be his tool to bring him back to power again....some of you reading this far and following my logic would see why I will conclude that IF Snoke is Plagueis it would make perfect sense and make the whole plot carrying more weight - like we've seen Sidious Empire (the apprentice)...now its time to see his master - Plagueis "Empire".
- Snoke was mentioned to be "wise". Kylo Ren said "The Supreme Leader is Wise" in one sentence. Plagueis was know as well..."The Wise" - Darth Plagueis the Wise - as title. Ring some bells?

Those of you that do not share my opinion about Snoke being Plagueis - drop your own. Its an interesting subject, currently going crazy in youtube between "star wars fans" - by that I mean people fans to all about star wars including: Extended Universe, Prequels, Originals, Sequels and the games.
No offense towards those fans to "originals" alone but Star Wars is NOT 3 movies cuz its far more complicated. Its not the lightsabers, nor the starships, nor vader (and etc) that are of importance. They are all just "toys" of a really big "game" and if you are "stuck" with few "toys" then, well...you lose.