Zeus also makes her timeskip training kind of pointless. IIRC outside of Fishman Isle and Wano, Nami didn't really have a major fight, so all that stuff she got in Weatheria was kind of pointless considering that Usopp removed a "magic wand" or something from the clima tact during Zou and Nami just gained all of her Weather skills and then some with Zeus. I mean the same could be said for most of the Straw Hats. Almost everything they mastered during the timeskip feels like power ups they could've gotten during in between arcs or during pivotol moments in an arc, except maybe Franky and Usopp.
I have to wonder though, would homies die with Big Mom or would they keep on living for as much lifespan time as Big Mom gave them? I only ask because we never find out what happened to Mother Caramel's Pandora home and its still never been explained how Ennies Lobby is able to stay in perpetual daylight all the time.