That is why I laugh when people say that the orig trig was a plan. It wasn't a huge plan. They winged it. They just made an amazing second movie. Edit: The problem with Snoke was he was a mystery to the audience, however, to all of the characters in the story, he was known. No one wondered where he came from, who exactly he was, or anything. To have a big reveal about who Snoke is, would be stupid because everyone who would be there for this reveal would be like, "I know. Duh" OR they would have to create a part of the movie just for him and his reveal, which would have added nothing to the narrative.