I'll copy/paste my thoughts from the spoiler thread.
My thoughts on the designs, for shits and giggles:
Luffy: I dig the new pirate shirt, but I love the scar even more. Even if Luffy's design hasn't changed drastically, that scar will serve as a reminder of his suffering for every one of us and is a blatant mark of his change.
Zoro: He really has the least noticeable differences, in my mind. I do enjoy how the eye scar emulates Rayleigh, though.
Nami: Big change with the hair design and I enjoy how much she's changed. I liked her previous design, too, but Oda did a great job of making her seem more mature in more ways than her meat pouches.
Usopp: I am in love with his new design. Completely fucking manly with enough Shaggy in him to keep him interesting. That hat seems befitting the sniper theme, as well. Also loving the pop green thing. It's about time he got some incredibly powerful attacks.
Sanji: Looks like Oda's bringing out Sanji's inner "French" and I'm loving it. Did I mention that I love these designs? I really do. The hair shift is pretty hilarious, considering the hype around that side of his face.
Chopper: Nothing new, really, but how can there be? I didn't expect him to change too much, though the hat cover is a nice addition and I think it fits his young adventurer style (considering he still is the youngest and has just now reached Luffy's age.
Robin: Once again, I am loving the maturity in her design. It reminds me of a cross between Vivi, Hancock and Hina, which looks really great for her. I also enjoy her new clothing style, more distinct, all purpose and further incorporating flowers into her design.
Franky: At first, I was disappointed at the loss of his Blue Raspberry Ace Ventura crop, but the more I look at him, the more I love him. He's become a robotic behemoth and that makes him look more ridiculous before, in an awesome way. Like some sort of giant robot gorilla (just as they mistook him for in Baltimore).
Brook: Soul King Brook ain't nothin to fuck with! I am seriously loving how Oda's gone all Bootsy Collins with him. He's Maggot Brain Brook (though it's only maggots buy now. Yohoho, skull joke!). I also love the Soul King title, given his experiences (being nothing but a soul for a year, being an animated skeleton and having been mistaken for Satan).
Usopp's new design wins for me, like it apparently does for everyone else.