Refine this for M2K and we're in for a treat.
Tag partners called in like Kameos in M1K either as an assist or full switch to continue kombos.
Expand on MK9's premise and we'll see the golden age of MK. FGC needs a savior at this point. Should be Mortal Kombat. Let's go Ed!
There's actual, MK9 like tag mode in MK1 that's currently unused/not finished!
At the moment, no evidence of this being added in future but its very likely.