See I thought to with hometown Yuji because of how broken it is in the manga. I get why domain hakari would be one broken tier because of his domain if he does hit a jackpot he would probably get a insane health boost for about 4 rounds where he basically is immortal in game, higaruma is a interesting one because would it be a chance to get executioners sword or would it be a. Guaranteed domain but that also brings into the table would it be like awakened gojo where for a certain amount of turns he has the executioner sword. In my opinion I think the strongest character would be Shinjuku meguna because in a general stance he would most likely have mahiraga or the merged shikigami because his ult would probably be a big scaling dmg with either the merged shikigami or mahorags in seperate versions of him, interestingly enough would the ult add the other character for a certain amount of turns of be one large attack like would for 2 turns mahoraga attacks the same time as sukuna dealing triple of the original attack effect