Also the story and history between Scorpion and Sub-Zero is about the only thing that has not changed in the series. Their story is also so human in the way that the hate and aggression felt by both characters is somewhat misguided.
It's like their mirror images of the other. And they hate each other for various reasons, Scorpion blames Sub-Zero for the murder of his family while Sub-Zero blames Scorpion for the murder of his brother (The younger Sub-Zero) regardless the passion of hate they have is something you don't see too often in a feud they would go the extra mile just to prove who is superior only for the rematch to go on again
I hope they never change it why change something that is always good? I mean to change their feud would be a disgrace to the whole history of Mortal Kombat and it fans. And I'm sure the fans of the respected characters would be very upset about it.
I would love to see those two team up for whatever reason, maybe to actually take out Quan Chi maybe even Shinnok. Seeing as how Quan Chi only added fuel to the fire. I cant blame Scorpion for his actions, i mean he was defending his family and all he knew. The same is said for Sub-Zero(the younger one), his whole hatred for Scorpion was the exact same as Scorpion's for the older brother.
That would be a great team up if Scorpion and Subzero join forces for one time against a common foe like Quan Chi who really is the reason why they hate each other