I think a more open format would be the best thing, instead of just limiting it to one character. But I know if they did decide to follow one person for an entire game, it would be Scorpion w/o a doubt.

And honestly I would rather play a mythologies about the rise of Shao Khan. Some of that history would be kool..but I really would not want that.

As far as a sequel to mythologies goes, I would actually like to see the sequel to Armageddon instead. Thats just me tho

Again?

Scoprion already had his backstory explined in Mythologies. Then playable as a secondary character in Shaolin Monks. Plus, he is basically a poster boy for MK.

We do not need more Scorpion. We basically know everything that is needed about him.

Alright then. Try this idea:
Mythologies 2 following the dead Sub-zero, Noob-Saibot.
Basically, a continuation of the original while branching to the actual MK story.....

After the gruelling hunt, we know the unnamed quisling is a physician possessing know-how on medicine that will fittingly cleanse Scorpion. This is not tolerated in their community, no matter the conditions, as it's seen as divination. All that changes when one of the founders (yes there are more folks involved in this) arises from the grades. The assailant then commands the adolescent prospects of the civilization, from the group. This pushes Scorpion to differ with the amateurs who mock the dress rules, in his own coterie (even though there is more to this than colouring). Though it still seems there was substantially more unity in the Shirai Ryu circle, when compared to the Lin Kuei and other competitors. The way they conduct their activities is proof.