Oh man. I really don't want Jade to turn to the dark side with XiXi. I was hoping Stella would slightly turn to the dark side and Gina would ask greg for an emergency Protein Shake to use on Jade. Wonder if the side effects of Xixi's lab will turn Jade evil.
I think in line with Xixi's drugs, you could make a case for them not necessarily bulking someone's arms up (because I want muscular jade to still look extremely distinct compared to Stella or Gina) but increasing muscle density a lot, in which jade's new look should reflect significantly a defined but compact upper body but a larger lower body with a focus on thicker more powerful legs for her kicking. Could even have a scene where Stella is talking smack to Jade about Stella still having much larger arms but Jade then mocks her through delivering a devastating kick that stops right in front of Stella's face but still knocks Stella over through sheer air pressure. That would be awesome.