I think you might misunderstand. If all characters are back-facing on the P2 side, they would keep their weapons in the same hand at all time. For example, Spinal will ALWAYS hold his sword in his right hand and his shield in his left hand.
As it is now, because they are front-facing both sides, Spinal switches hands with his sword and shield depending on what side he is on. When he is on the P1 side, he holds his sword in his right hand, but on the P2 side it is in his left hand.
thats why im asking for stance switch button. Sometimes it works as a glitch. Click the analog to switch your stance would be cool dont you think?
Nah. I thought it was useless in Mortal Kombat 9/X, and I would think it was useless in KI as well.
Uh ohsorrrrrryyyy incubuslord!!! 
Maybe this is one of the updates to the game that they’ve been working on and every character acts like this now.
Only difference is that when it comes to Tusk, he’ll have his back turned on P1 side and front facing the screen on P2 side.
Could be possible.
I don’t think it’s worth a button to switch between forward/back stances unless it’s something built into a particular character; in the case of fight stick players, how would they even make that work?
Besides, in my opinion it isn’t worth the programming time/cost to add this feature, because having a character “mirror” itself really isn’t that bad.
Mirroring feels like something that shouldn’t be happening in now days, yet it is. I know recreating stances and on the other side requires extra animations, as opposed to mirroring the character but still… There also the option of just turning the character model around.
It’s also an aesthetic choice, to mimic that of 2D fighting games, which is very viable as ALOT of fighting game fans want to keep that aesthetic as true as possible.
it is possible to recreate/alter the stance and move set on the other side, Mirroring the animations and not the character model it self.