As someone who didn't have high expectations, I think the chapter was amazing.
BUT
There was a limit to how many times you can expand a scene, at the beginning seeing Luffy jump when he was alone in the rooftop was fun but that was just the beginning, seeing him jump again and again for 5 minutes(I'm pretty sure i'm exaggerating but to me it was that long) it was too much. And a few other things but besides that and the flashback, it was a very good chapter
BTW Mayumi is amazing