Baraka:
Probably in the game,'cause his ending in MKG can't be canon, and because of the render, and one of my fav's since MK2

Blaze:
the guy's got a mission, and i for one would like to know what it is.

Bo'raicho:
I like the entire drunken-style-mentor thing going on with Kung Lao.

The Dragon King - Reptile:
I for one think Reptile will be the vessel for the Dragon King, and that he'll be the End Boss of MK:Dec

Cyrax:
Like to see this guy get more developed in his role as an ouworld investigation agent.

Drahmin - Quan Chi:
These to probably merged to gether into one being, and that just spell mayhem, i like it....

Jax:
With Sonya being general and all, i don't think she'll be doing alot of fieldwork these days, and Jax is just the man to lead the new recruits Cyrax and Kenshi after the Red Dragon Clan.

Kai:
Give this guy some really nice Capoeira moves and a new look, and he'll kick ass, ad besides Kung Lao needs a sparring partner.

Kenshi:
As part of the Outworld Invetigation Agency he could run into some interresting people, like let's say....his ol'pall Ermac?

Khameleon:
She went to look for Reptile to tell him something, what would happen to her if she found the Dragon King instead? New mate for the King perhaps?

Kitana:
Edenia will probably play a part in MK:Dec aswell, so you can't go around her.it might be nice to see jade,Sindel and Tanya incorporated into her storyline aswell.

Kung Lao:
Well earth needs a new chamion, and i think Kung Lao is th right guy to do it.

Moloch:
Well the big Ape is in Rayden's ending, he'll be back....

Nitara:
I like the new vampire thing going on in MK, as some of you might or might not agree with, but just as with Moloch she'll be back....

Rayden:
The Thunder God will be back to support the Erth warriors, maybe with the Wind God Fujin right at his side.

Sub-Zero:
As if ya can get around this guy. Sektor and his Tekunin are probably after him. Frost is recovering, Sareena will have her plans with Sub, and i think his old buddy Smoke might turn up at some point.

Scorpion:
trust me this guy is gonna be pissed as Hell. he'll want a piece of Drahmin - Quan Chi, and kick Moloch's ass as well...'nuff said.

Mavado:
Kano is dead,...and it's time for Mavado and his Red Dragon Clan to step up to the plate....

Sektor:
raise his own clan for nothin', I don't think so, be nice to see how he reacts to Cyrax aswell.

Just my 2 cents...