I think they are going into something "post-apocalyptic" on the game, you know revisiting ancient mythologies and places, scattered technology, the looks of some characters (like Kano).
At the same time, characters like Cassie Cage seem to inspire that Earthrealm has survived well the invasion (even though she may appear in the 25 years part the way we already know), she's well equipped.
Scorpion, Subzero and Raiden are of no comparison, they have an unique style and functions. The first is a ninja wraith, the second is a Lin Kuei assassin and the latter is a thunder itself as a god.
This looks like one hell of a story.