To fill the question marks....

Females

Sareena
Tanya
Li Mei or Ashrah

Males

Kai
Bo Rai Cho
Reiko
Fujin

If there is going to be a bigger roster of on-screen selectables, then here are other's that I would like to see.....

Frost
Drahmin
Hotaru
Havik
Darrius- Let's face it, with Jax gone, we need him.

Unlockables

Meat
Nitara

DLC

Emerald- rumored like Skarlet. Skarlet became reality, why not Emerald?
Tremor
Dairou
?

Unmentionables

Jarek
Hsu Hao

I really dont see MK10 having less characters than MK9. Even if they are essentially unchanged from MK9.

"Darrius- Let's face it, with Jax gone, we need him."

The fuck? If we're filling in ethnic slots just for the sake of having the token black guy... I'd rather see Kai.

I think I've had enough of fake characters coming to life. Who the fuck is Emerald anyway? Never heard of him/her. Sounds stupid. Another character named after a stupid color.

I really love the idea of Jarek and Kano teaming up. It would be great to see both of them in there. Jarek just needs a better moveset (and furthermore, he needs his own fatalities), so no more of that crappy lasso he used in Armageddon.

I also agree that Li Mei should also be in. Despite what most people think, I would prefer her in her revealing outfit. It's soooooo sexy!!!

I really don't see Mortal Kombat 10 coming to fruition. I actually see Mortal Kombat Arcade Collection coming first, then they will continue the "canon" storyline from MK9 to MK10.

LOL have you been living under a rock?

The Arcade Kollection has been out for over a week already.

In terms of character i think some of the classic ones will return. Raiden, Scorpion and Sub Zero to name a few. But since we had a reboot and it might mean that the things that lead to armageddon can be avoid from now on, they can go on with the story but slightly modify it every turn.

For characters that came after the MK3 era i think some of them might return:

-Shinnok
-Tanya
-Reiko
-Fujin
-Quan Chi
-Nitara
-Kenshi
-Li Mei
-Mavado
-Frost
-Ashrah
-Hotaru
-Havik
-Dairu
-Onaga

Along with some of the oldest chars. I would honestly scratch Onaga unless he can be back as boss though.