I only reserve myself to couch gaming sessions with my friends because i don't actually own MKX or a PS4, so tough luck with testing this out myself right now, but i feel like i might've stumbled upon something that would greatly enhance SD's oki: namely, the ridiculously fast recovery on both versions of mimic shadow kick.
The idea here is that EX MSK could absorb a wakeup attack with its two hit of armor, hit the opponent back for 7% with the mimic and then have Johnny recover fast enough to follow up with a full combo punish - perhaps even against normally safe on block wakeups, since he's not taking any blockstun. Could potentially be done from a mimic cancel if there's enough advantage on knockdown, so you can both get your mimics up and throw out a +2 on block, counterpoking and full combo punish on wakeup oki.
The idea here is that EX MSK could absorb a wakeup attack with its two hit of armor, hit the opponent back for 7% with the mimic and then have Johnny recover fast enough to follow up with a full combo punish - perhaps even against normally safe on block wakeups, since he's not taking any blockstun. Could potentially be done from a mimic cancel if there's enough advantage on knockdown, so you can both get your mimics up and throw out a +2 on block, counterpoking and full combo punish on wakeup oki.