If we want to find "rivals" of some kind in all this situation, those would be Law and Kidd. Law certainly didn't play second fiddle like some believed, he was mighty impressive. Let's see if the visuals are good like they said, I am quite hyped for them.
Regarding Big Mom, Oda could have at least drawn couple of CoC coated attacks from her instead of just simply mentioning her using it off panel. And she also doesn't have awakening apparently, lol. Panels could have been used for those things instead for...some others. Lol. Big Mom is going down here but she certainly will be mentioned when we reach Elbaf, with the giants being indebted to Luffy and co. Those giants will help them towards the end of the story (final war).
I look forward to see further things from current Luffy and Zoro (who, yeah, isn't done lol). Kid and Law are impressive but these two are THE two monsters. CoC coated KKG and Hiryu Kaen are coming and soon Kaido's head will be on pike.