Raiden may be under the One Being's influence.
Considering how the One Being is hinted to have influenced powerful beings such as Shao Kahn, Shinnok and Onaga in the past and how it plans to reunite the realms to make itself whole again, it is very likely that Raiden may now be under the One Being's influence (after Raiden absorbed the Jinsei's corruption into himself).The Jinsei is considered to be Earthrealm's life force, and when Raiden absorbed Shinnok's evil, it is very likely that the One Being chose Raiden as its new host. The One Being wants to merge the realms to become whole, and could manipulate Raiden under the pretense of making Earthrealm "safe".
Triborg will be back, but will have conflicting personalities.
Since Triborg hosts the consciousness of Sektor, Cyrax, Smoke and Cyber Sub-Zero, it is possible that one of them may overpower the other three personalities. After being activated in the 19th Chapter, he picked up Sektor's brash personality and bad habits, and this went horribly wrong for Team S-F; having seen this, Team S-F may want to put in a fail-safe device if Triborg goes rogue again.