That be bringing back Gantu, the original film's main villain who got left out of the live action reboot due to apparently budget constraints, thus instead making Jumba the main villain, to which point he's not part of Lilo's extended Ohana and will be waiting for someone like Dr. Hamsterviel now that they're allies this time around to break him out of prison: https://www.change.org/p/bring-back-gantu-in-live-action-lilo-and-stitch-2