Yes, I know Baraka's a NPC, and that the only chance of him being playable is DLC (or hacking, but that doesn't really beat the real thing). So let's see how we could make Baraka work as a playable character, if he ends up as DLC. I've read that variations were an apparent issue for his gameplay. Anyway...
Tarkatan general: I'd make that his most recognizable variant, where he fights largely as he did in the past.
Spark: a zoner variant with variations of his projectile attack. I got the idea from his MK:SM boss fight where he fired various sparks from his blade.
Berserker: Baraka in a frienzied state. Increases both his speed and power, and delivers savagely powerful attacks. A strictly close-range variant.
So was it that hard for them to come up with three variations for Baraka? Hell, were variations even an issue at all? I think people exagerate how drastically different the variations make the characters. I saw Goro use plenty of the same moves thoughout all his variants.