My biggest take away is consistency and the eternal underdog from Luffy.
I mean New World started with everybody praising Luffy. They are back after 2 years. Strawhats are somekind of legends. No longer rookies, now they are veterans.
Even at Dressrosa Doflamingo praised Luffy, "that animal get out of the cage" and stuff like that.
Oda hyped us with Luffy taking a fight with Big Mom, a Yonko, at the end of the first arc. Then he showed he is capable of fighting an Admiral and no longer needs to run from them.
Only to be humiliated by BM DF or whatever that was and one-shotted by Kaido.