The world is going to change but somehow piracy or adventure might endure that change, the rise of an archaeology focused society that needs to unveil all the mysteries that lye on the bottom of the sea, history and the rest of themes that had been silenced by the WG for centuries, I wouldn't be surprised if Robin is more relevant to the incoming world than Luffy, it feels Luffy is destined to die EoS because all those moments where it was stated Luffy was shortening his lifespan... I would like if Luffy actually died against Kaido but won't actually die until everyone is happy, like Kuma or Bucciaratti from JoJo's. That would rise the meaning of the moment after Wano when Luffy told the SH his dream