Here is just a brief glimpse of what modes I want to see in next-gen MK8. Although both Discs could be on one, I think a second disc could make the value rise.

Main Menu; Disc 1:

- Story Mode
Mode in which you fight pre-selected characters and follow along
through your fighter's story, meeting with key people and unlocking your
ending.
- Arcade Mode
Mode in which you fight through randomnly determined characters ala
classic Mortal Kombat. Earn koins for each progressing battle. You can
rank up on this mode, which earns better amounts of kurrency. This
mode also enhances your Online Mode by placing you with players of
your own rank.
- Time Attack Mode
Mode similar to Arcade in which you must fight through randomnly
determined characters. The faster the fights, the more koins you earn.
- VS. Mode
Mode in which you fight a player or computer in a one-on-one mode.
Winning fighter earns koins.
- Team Mode (Unlockable)
Mode which you can fight against a player or the computer by choosing a
team of characters to play as. The number of fighters you have at the
end determines the amount of kurrency you recieve.
- Tournament Mode (Unlockable)
Mode in which up to four players can fight at once in an all or nothing
brawl in one arena. The number of players you take out determines the
amount of currency you earn.
- Survival Mode (Unlockable)
Mode in which you fight through randomly determined characters and
try to advance while your health is slowly chipped away depending on
your skills. The progression you make is equaled by the amount of koins
you earn.
- Practice Mode
Mode in which you can test your skills against a dummy, human player,
or computer opponent. Options to try defensive training or complete your
characters move sets to earn a special bonus.
- Konquest Mode
Mode in which you play through the story of Mortal Kombat: Damnation
through the eyes of a scorcerer of the Netherealm.
- Kreate-A-Kharacter
Mode in which you kreate your own fighter to partake in the fighting portion
of the game. Unlock new clothing and detail articles by finding them
throughout the game.
- Online
Mode in which you can link to the internet and fight opponents from all
across the world.
- Kontent
Mode in which you can view everything that you have unlocked in the
game including fighters, endings, kodes, secrets, etc.
- Profiles
Load a profile to play as and customize it your way.
- Options
Mode in which you can tweak certain options on and off, including round
time, number of rounds, difficulty, etc.

Main Menu; Disc 2:

- Mortal Kombat History (Unlockable)
Mode in which you can play all through the Arcade Modes of all the
classic Mortal Kombats by entering various codes found throughout the
game to progressively unlock each game.
- Theater History (Unlockable)
Mode in which you view the biographies and endings of each character by
respectively earning each one by playing through a game with a fighter.
- Mortal Kombat: The Legacy
Mode in which you view a video which reviews all the Mortal Kombat
games, interviewing many involved with them, showing behind the
scenes footage, and giving you a very in depth look at them.