Seeing how many parallels Wano has to Thriller Bark and how much Zoro did back in TB, he will possibly have more weight on his shoulders than Luffy in this arc. Those who back up the Rubber Jesus has to do it all will, of course, doubt it but they are free to re-read Thriller Bark to see how little Luffy did in that arc.
Wano is definitely Zoro arc which has to answer many questions regarding Zoro and people need to get mentally prepared for it if they can't stand Zoro greatness. Zoro has been sidelined the entire NW, saved for Wano and there was an entire Yonko arc without Zoro for those who needed a break from him. Wano will be an entire different story and it's only getting warm.