i dont know if there is or isn't a final secret but look at the description for the extra picture called "great dragon egg" it says something about it prophecising the !!!!return!!!!! of the dragon king once it is hatched and doesn't it say when you finish konquest that the dragon egg hatches(that's why you get blaze)so what about that?

I would assume for the word "return" and the fact of "dragon king" that liu kang might return?

what'd you think?
If he did that would be kick ass!!
liu kang rules!