I think Killingham had more potential as a Zoro opponent because of his creations.
Oda hasn’t been nice to Zoro fans in Elbaph except for the Rocks flashback. The wings tax eventually hit for good, until Oda changes the dynamic
To be 100% fair the only hk opponent who had more potential for zoro was shamrock and no i'm not joking with it
-A swordsman with his own three sword style
-guardian of hell vs King of hell
But he also troll with Super Sommers because he is always talking about love and zoro is going to fight him who is not love predictor but the nightmare dude wasn't to give him nothing anyways same with Super Sommers
Problem with one piece writting since 2022 is that the dude is becoming super repetitive not creative anymore and forcing parallels for fanservice
I have the feeling that zoro is the most affected with this trash writting and is going to be hard to shine it except there are swordsmen involved