Since its now official she is returning the "bootleg" Terminator (picking up from T2) we were going to do wont happen. The same bootleg people that did Punisher and Power Rangers.
The short version:
It was to be approx 15 minutes total, Roland Kickinger as the T800 thats sent back to our present time to protect John Connor (Edward Furlong) yet the T800 is no Uncle Bob. With no filter he is free to destroy and kill anyone that stands to interfere with his mission. John has no control over the T800 minus what effects his own safety. John is damaged goods, judgement day never happened, he is drugged out and living homeless alienated by his own past and future he was certain would take place starting 25 years ago. Sticking with whats already existing within all the films as a loose basis, alternate time lines and future technology, shortly after the T800 arrives back in time to 2018 (the present as it would be filmed and released in 2018) another time traveler arrives, bloodied, battered, bruised yet we dont see who is is clearly. After John comes to terms that the T800 is real (after the T800's brutal slaughter of a few thugs for the sole reason to obtain a weapon involving an over turned vehicle pinning the T800 to a parking garage wall) the other time traveler appears taking the weapon from the dead hands of the armed thug, its Sara Connor (Linda Hamilton), she is visibly scared, heavily aged, a crazed look in her eyes. John not accepting she is real as he was told she died of Leukemia near 20 years prior, proceeds to step towards the T800 until Sara cuts herself with a shard of the auto wreckage revealing the bones in her hand. She tells him bits of quick information about the past, the future, where she had been and where she came from. She was abducted by Skynet and transported to the year 2030 in a time jump portal. Skynet knowing there will be no winning side in the war against humanity, knowing it could never stop the final outcome of the war where humans blackened the sky leading to extinction on both sides, came up with the solution, hybrids. The combination of humanity and machine is the only way the future of humanity can survive. She tells him Skynet is a defense system, if there is nothing to defend, there is no reason to exist. If humanity is wiped out, Skynet will have no mission. Nobody will win as humanity will destroy its own world to end the machines. It wasnt until Sara herself had seen the end of the war in 2032, the future present, she realized what Skynet had been telling her for two years in captivity had been true. The end of the world. The only way to stop the outcome of the war against the machines is to stop its greatest proponent from ever seeing judgement day itself happen. The Connor blood line has to be stopped, Sara has been sent back in time, not to save John, but to kill him to save humanity from extinction.
We may even had gotten Robert Patrick to be a motorcycle cop in the opening scene doing a search on John Connor.