I think it's insane how Johnny Cage went from being almost the Yamcha of the franchise to now being one of the characters they like to play with being portrayed as the main character. He was killed off early in the 2nd movie, he was the main character they decided to axe to add tension, around that time he wasn't in vanilla MK3 (to be fair, neither was Scorpion) and then it seemed like for a while he was included in the games but lacked prominence. Then a shift back to focusing on him and doubling down on the lore that there is a special power inside of him. Now it looks like he might be the main character of this movie.
I don't mind it. JC is my fav MK character.