>>281381147
The problem is the unsatisfactory writing for something setup since the start, the payoff wasn't there because Sukuna didn't lose anything meaningful.
If you're going to have the mentor / badass character killed, they should achieve some small victory or setup the next fighters for the win. Gege, in his infinite Sukuna glaze, didn't let Gojo have this to any meaningful degree, it felt like crumbs. Sukuna wasn't weakened in any way we could perceive with our own 2 eyes after the fight, since he even got a free revive & upgrade afterwards. The only supposed nerf was that he couldn't temporarily use Domain because it was still on cooldown (and he didn't really need it, he freaking killed the next strongest fighter with low difficulty just spamming his usual attacks), and something about his Dimensional World Slash now needing hand signs and a chant... Which is a FREAKING MADE UP NERF, HE LITERALLY DIDN'T HAVE THAT POWER BEFORE FIGHTING GOJO. You realize how crappy that is? Same as the 10 Shadows summons, those were things exclusive for the Gojo fight, him losing them doesn't feel very relevant, it was like Gojo breaking his secondary gear he stole from some kid.
Instead, to make it more relevant, perhaps make the 10 Shadows a KEY for Sukuna's greater plans or at least something that would accelerate it. Mention how Mahoraga can be used to summon Tengen or something, so Gojo stopped an apocalypse by killing it. Or have Sukuna start with his legendary Cursed Weapon and let Gojo destroy it, instead of Higuruma confiscating it. We'd see how vastly stronger Sukuna is with a weapon and realize they're only winning because Gojo took care of that.
PERMANENTLY NERF HIS REGENERATION, if Sukuna couldn't regen during the entire final battle because of his wounds against Gojo it would be cool. Or have him entirely sacrifice his Domain to do the World Slash, it was a cheat, at that point it was like a little kid killing a bear, the cost should be losing your power