In Wano Zoro was still the strawhat with the most focus after Luffy though. And he did get some great stuff, Zoro on the rooftop and Zoro vs King are some of my favorite moments for him. I especially like the part where Zoro puts his life on the line for his dream and is able to tame Enma.
"If I have to keep exuding it at this level, it'll kill me. But no, that's perfect".
Top Zoro moment right there.

And it comes after a scene of Zoro's introspection on all his swords, which comes after a bunch of scene of Zoro being invested in Wano and wanting to help its people (scenes which only Luffy and Zoro got).
So yeah, I would argue Wano was Zoro's arc more so than any other character besides Luffy and maybe Momo.