Negan would’ve been better for MK11 than Tekken. Not gonna happen now I guess. I like your Terminator idea, should have great potential. Also the T-1000. Slasher villains fit in MK in general, so anyone’s good. Everyone’s better. There’s a chance there’ll be Michael Myers I think, MK9 had Freddie.
I’d also think it would be funny if Ganondorf were to be a Switch exclusive character. If there’s one Nintendo character that could be in any way fitting, even if just remotely, it’d be him. Nintendo won’t do it though, even if he is a bad guy.