I really wanted to see Zoro vs Cracker or Smoothie and for Reiju to lust over Zoro with the whole heart eyes too.
Seperating the SHs again after doing it at Dressrosa for so damn long was really frustrating too.
I really wanted to see Zoro's reaction to Sanji's behaviour at WCI and also the SHs causing Big Mom to come to Wano. Also Franky's reaction to hearing how Big Mom wrecked the Sunny and then it got "blown up" for the 1st time (and then another blowup fakeout at Wano sigh).
I do genuinely think Dressrosa also really suffered from splitting half the SHs and half of them being missing for most of it or w/e too.
I never want to see the crew split up ever again. Sabaody was the worst case for it and then Oda had them split up again for different reasons much later on after waiting 2 years in story time to reunite them lol.
But yes, I do think WCI would have been a lot better with Zoro there potentially as well as the rest of the SHs. Things would have definitely gone better for the SHs, even if not significantly better somehow, but still better.