>>142752104>Is getting a fucking prosthesis a power up for you?
He couldn't channel nen through served limbs, as shown in the fight with Chrollo. Now he can use his rubber nen to mold fingers and a leg with ease. If a character performs a feat that would have been impossible before, then that's a upgrade.>Let alone one that requires constant upkeep.
If maintaining those lost parts with his nen for long periods of time isn't a problem for Hisoka, then it's more reason for it to be an upgrade.
If the next chapter shows Hisoka beatinf Spiders with ease, then he got stronger after death. Don't know why there are people againsy Hisoka getting upgrades. It'll add more tension to his final battle with Gon, and he'll need to built up to atleast Adult Gon-tier or Meruem-tier.