Enjoying Zou, but Oda really needs to tighten up on pacing. We've been on Zou for 17 chapters and have learned a good deal, but I actually have been re-reading the series, and here's all that gets accomplished within 17 chapters of them merely entering the grand line:
They met crocus and laboon, learned about raftel, learned about how the grand line works, learned about how the log pose works, learned about baroque works, met vivi and mr 9, went to whiskey peak, fought everyone there, learned about Alabasta, learned about crocodile, met Nico Robin, went to Little Garden, and met Dorry and Broggy. That's 3 different islands and a ton of information. Now, I know those are fairly short arcs, but that's a lot of different things going on with some pretty interesting character moments sprinkled about.