Since this arc is pretty much over, except for the party, I'll just chime in my bit.
I didn't like it, despite initially thinking I would, for reasons that are mostly repetitious of OP's traditional writing techniques which I don't see a need to repeat. I occasionally lurked in this thread to see what other user's responses were, and I think it show how OP simply doesn't cater to my tastes that what a lot of people praised as awesome, I found really lame. The characters don't feel believable in how they behave (the whole Mink hiding Raizou thing), I loath Raizou's character design (and yes, I know thatsthejoke.jpg), I was disappointed how the Red Polygraph turned out to be nothing but a exposition mechanic (I was hoping it'd reveal something about the void century. Even a little information would be nice).
And while they didn't get to do as much as I'd like in Dressrosa, my favorite characters of Usopp, Zoro, and Robin were the ones who remained in that arc, and now it looks like we're getting Nami, Chopper, and Brook to go rescue Sanji along with Luffy. So, the only straw hats I like even a little are out of the game and I'm just left with...these guys. Great.
And now, it's even suggested that either Kidd got crushed by Kaido and Apoo joined him, or the Kidd-Hawkins-Apoo allience joined with Kaido as a whole. Which if so, is really, really lame because you know how much I like Kidd (not as much as you think, really, but the pool of OP characters I like is slim pickings and he's the closest I find to being likable). I can get the rest of the Supernova's doing their own thing, but Law, Luffy and Kidd were the ones who were established as vying to become Pirate Kings under no one's rule but their own. So Luffy and Law are doing their own thing, but if Kidd's ambitions just got wrecked after being built up, I'm gonna be sad. Kidd makes a good rival to Luffy, I would rather he remain independent or else in an alliance, but not under any Yonko. He can't serve as a real rival to luffy if he's under someone, or else just had his ambitions ruined by Kaido. My hope is that they're about to pull some coup d'etat or some shit.
The only think I like that I'm taking away from this arc is Zou itself, but that's just because I like the concept of giant, living, ancient weapons, and Zou provides that.