I've had a problem with how MK has recently introduced characters into the storyline. In the classic MK's they introduced characters such as Jade, Smoke, (Ermac, ERror MACro), Reptile, & Noob Saibot by having them a secret characters. Then they became more involved in the storyline over time.

Now it's like we have to unlock characters that have always been in the series...Like Jax, Cyrax, Reptile, Raiden, & Kitana (Deadly Alliance)....Raiden primarily in MK:Deception...Why unlock characters that we already know about and their moves it's nothing surprising there, and it's nothing challenging about unlocking them? Just that it takes to damn long.

Sindel, Tanya, Liu Kang, & Jade were acceptable unlockable characters in MK:Deception because they we're never seen on the new game counsels. Jade, Tanya, and Sindel had only been in 1 MK before MK:Deception.

If you keep the main characters, lose and take a couple with some new characters(like Kung Lao from MK:1 to MK:2). But for the most part....go back to making new characters as hidden or rumored. Like Dairou, and those already stated....or just introduce them through a character's biography. The Dragon King was rumored all throughout MK: Deadly Alliance...thats why the build up was so great for MK:Deception.

This also gives a character a better ability to be involved in the story and have in impact in the storyline...cause know one knows about them..