Since we can now confirm that the Supreme Leader isn’t human, it looks like he likely won’t have a familial relationship with any of the other characters.
The revelation that Snoke is not human is a rather big one, and can eliminate quite a few fan theories from the message boards.
And while we’ve been told that Rian Johnson’s The Last Jedi won’t necessarily solve the mystery of Snoke, at least we have this tidbit of information to hold us over.
With the parentage of Rey and Finn still very much a mystery, some assumed we’d have a Darth Vader/Luke moment sometime during the new trilogy.