Not sure about any of you, but after finishing Story Mode in Mortal Kombat 9, I found the game to be quite boring. So my answer to that?
Good 'ol PS2. After realizing the Deception servers were empty, I bought Mortal Kombat Armageddon on Amazon and learned it had a Kreate-A-Fighter Mode.

While watching videos on YouTube on how to create fighters, I found this video: http://www.youtube.com/watch?v=gNNu2vQ7Ulw, which lead me to a website called http://www.gamerlabor.com. To my surprise they offered a lot of KAFs (though it sucks they dont update the website often).

For those of you who are finished with Mortal Kombat 9 and waiting for MK10 (like myself) I recommend that you check out this website.

I probably wont buy a subscription from there until they decide to be more consistent with the formulas, especially considering that the fee is monthly.