Response to ARC-5597
Jack Harkness would be a noble rebel. I could see him being himself (stealing stuff, boarding ships) and using all sorts of technology to cause trouble (for a good cause, of course). I think Salem would have an interest in him, maybe talk one immortal to another. I would actually laugh out loud if he tried to hit on Qrow and Clover, classic Jack move.
The fighter might be difficult, but I could see the Bad Batch catching Ruby's group. Hunter could find them easily, Crosshair could disarm them easily, Tech would outsmart them and turn their technology against them, and Wrecker would just beat up any person he sees. I'd like to see him go toe to toe against Nora. As for Echo, I'm not sure what he would do, but he could definitely help. I'd like to think he would be sympathetic to Penny, he has a good heart.
As for the Ace Ops, I think Vine would see it as a logical move. Marrow might also agree, not wanting to fight Ruby's group. Elm might understand, but I'd be worried about Harriet. If she wakes up to find out she's being replaced by mutated clones to handle a group of kids, she would want someone to pay in blood.