In an interview with The Hollywood Reporter, Andy Serkis was asked if he would return for Star Wars: Episode IX, should J.J. Abrams come calling.
This writer shares Serkis’ opinion that in the context of the film, Snoke’s death is really well handled and it sparks some truly excellent following scenes.
While people can theorize that Snoke has a clone or will be a ghost, I think that Snoke has already fulfilled his purpose.
Serkis answered that he would gladly return if he got the call, but said that he was a fan of how Snoke went out and what escalated out of that death.