Since jujutsu kaizen is up right now and im caught up with the manga, something came to mind
Me and my brother @Polar were having a late night talk one day and brought up the topic of SRP characters having cursed techniques and how diverse everyone of then would be since cursed techniques and domain expansions don't have to be solely hand-hand combat related, for example;
Koji Hiroshima (@Polar) Domain expansion would be a motorcycle/car race since his character is a delinquent and rides bikes, and whoever wins the most races out of 6 would get a boost in cursed energy or take damage based on the amount of races they lost.
Jujutsu Sauto (mine) would have more of a Itadori situation but the technique would be based on which personality is fronting, if its Juju it would be based on children's games, So he would have many to go off of, and his domain expansion would basically be children's games you would play on a playground, for example dodge ball, catch, tag etc. the domain would change itself to an environment fitting for the children's game
all with the exception of Satoru Gojo of course