But it's not a normal arc. It's a flashback and a climax. The arc before is rushed. Neither the Vegapunk satellites nor Stussy work. The Seraphim are underwhelming, Sentomaru's closure was shoehorned into the finale, Lucci and Kaku are brainless. There is really nothing worth rereading, there aren't any good gags to surprise you again and again, there's no cool battle that you want another look at, there's no adventure and the Straw Hats are glued to the floor. "An arc from the future", doesn't sound all that convincing, right?
It's normal that Oda slows down the climax because he wants this countdown thing in every arc, but it was a big mistake to offscreen the Seraphim fight.
The next arc should just be normal again. There's just three story arcs after Egghead it seems - Elbaf, Laugh Tale and Final War. Elbaf is the last opportunity for normal One Piece. It has to be told slowly, there's like 50 major characters that still need closure.