Nah, even though you got your W with Loki being so strong, Shanks being evil is like, completely dead now.
>We know Oda created a completely new, potentially stronger character whos a shanks twin, while being completely evil, there isn´t going to be 2 evil Shanks´s
>We know about Shanks´s government connection, he lied to them so he could gain intel
>he tried to use that intel to get Harald to not do the second seal, because it would screw over Elbaf, and he risked his life to even try stopping Harald lol
> we saw him feeling really bad about just being born a CD, he was almost as sad as Loki was
>he didn´t try to kill Loki after capturing him, and probably told Gaban to free Loki when luffy arrived.
> Shanks is clearly more comfortable around Gaban and Rayleigh then he is around his biological family, where he´s clearly uncomfortable
It would have been a cool theory, but there isn´t really any point to it anymore, and Shanks is probably going to die after this arc anyway, obviously to some antagonist, with Teach being most likely, but also the government with Imu or other figarats.