Perhaps this could mean multiple endings depending on who you fight or perform a fatality on. It would certainly make for great reply value, especially on those days when no one wants to challenge you. I'm not sure if the versus screen will have the kode bar of MK3 and 4, but I don't see why not. This would allow for many features to be included. Expect the usual secrets that accompany the series, such as secret characters and so forth.
Fatalities are a given, but who knows what other finishing moves to expect.
The series got rid of everything except fatalities for MK4. MK5 is sure to have many more features yet to be revealed. The team is in early stages of developing a story for MK5. They usually don't focus on this part of the game too much until later on. However, I'm not sure what to expect without the series' co-creator, John Tobias.