I think the Kid pirates were legitimately destroyed in elbaf.
I think:
- Most of the crew died
- Kid lost his legs
- Killer lost his arms
- Heat lost his jaw and possibly some limbs
Much as he did with the arm Beckman took, Kid will use his DF to rebuild himself and his crew from the ground up.
He will replace his legs with engines that shoot out immense amounts of electromagnetic energy, similar to damned punk. This will allow him to fly at high speeds.
Killer gets new cybernetic arms that are able to hold much larger spinning blades.
Heat’s new jaw stores flammable liquid in it, amplifying his fire breath and making it much stronger.
The rest of the crew is replaced by robots created by Kid’s fruit.