Wano was the only arc where Zoro was fully pushed to his limits ,
Law got 3 different fights where he was pushed to his limits
- his fight with doffy
- his fight with Bigmom
- his fight with Blackbeard
Wano was his last chance where characters were flexing advanced conquerors and showing their potential
Then post wano we got many big names like Garp , shanks and Rayleigh Flexing this ability
but law who had his character fleshed out and even his power didn’t show anything related to supreme king haki
Heck he has been used twice in a scenario where he is like “ oh shit , this guy is a supreme king “
During a conquerors haki scenario
- basic conquerors haki
- advanced conquerors haki
This was done twice ,
When 2 supreme kings duke it out and law watched them in awe,
And in both cases he would have been killed by the enemy if not for Luffy
Imo his supreme king card has been expired cause he has been in the story for a long time
this doesn’t make law bad since he still got great willpower , intellect and a super op devil fruit ,
He has the potential of being peak human (outside of conquerors ofc )