Probably regretting coming back to fight Katakuri so he can get his Observation increased instead of escaping.
This chapter actually made me realize that One Piece is probably best left read volume to volume and not chapter to chapter. It's kinda weird that we read manga like this. Imagine reading a novel specifically one chapter at a time, one chapter a week. This was the same deal with Dressrosa. That arc felt like it was dragging when reading it weekly. Re-read it now that it's complete and you gon from chapter directly to chapter directly as soon as you're done, and it's WAYYY better than reading it weekly. WCI is likely gonna be the same way and I'm actually contemplating reading volume to volume and not chapter to chapter.
Go back and re-read earlier arcs like Skypeia, Alabasta, and Enies Lobby/Water 7, there's chapters like this too. Hell, THIS chapter isn't even like one of the ones where nothing is happening. In this chapter, the cake has arrived, Sanji is with the crew again, Bege's assination plan is back on, the BM Pirates are far more organized, an ambush has been set up for Luffy, and we see Luffy taking critical damage in this fight the likes we've never seen before, actually giving some good tension.