The one thing that I do wonder about is, who exactly is the hivemind? (definitely looks like it's a hivemind occupying 3 cyborg bodies,if the intros and the revealed fatality are anything to go by, as well as Brian's tweets)
Is it really a new character controlling all 3 cyborgs? If that's the case, how did Smoke turn back into a cyborg?
Honestly, I like myself to believe that Smoke's soul went into a spare cybernetic body Sub-Zero didn't destroy (for whatever reason), hence the reason Revenant Smoke refers to himself as Enenra, and not Smoke. This allows for the possibility of both Human and Cyber Smoke to exist in this timeline, and it could also explain why he went after Sektor's head and, I'm guessing, Cyrax's scraps. He needed to get stronger in order to get back his original body and restore it to a non revenant status. Triborg is just a name he goes by to hide his real identity.
Or it's Hsu Hao.
IDK, that's my own theory as to who Triborg really is. It could be Sektor just having a spare body, just in case, and his personality is the dominant one.