it needs:
secrets like mk1: one hit, your dead... ending viewer.... flags.
Secrets like mk2: noob, jade and the test mode!
secrets like mk3/umk/mkt: minni games and sound tests and all cool stuff including one hit fatalitys.
then there needs to be stuff like whats on tony hawks ps. big head mode, slow mo, moon physics, giant mode, small mode and funny stuff like that!

there needs to also be other ones like unlockable arenas and costumes.

Maybe there will be a "Final" Secret like MKDA.

Oh no... wait... we did not find that.. and there might never have been a final secret.

It is all about Deception: