I really enjoyed the Saboady Archipelago arc, and I thought that it was very well done in the anime.
The story itself is very cool, introducing tons of unique characters who will be important for years I'm sure. It's fun that Oda waited until that moment to unleash all these great new pirate crews on us.
The animation was pretty good in general, and it was amazing when it needed to be. Admiral Kizaru's stuff was particularly smooth and impressive, which it needed to be to get across how impressive he is.
There were some parts where the animation suffered though. Much like in Enies Lobby, scenes where the the whole Straw Hat crew is fighting with a lot of marines were animated pretty poorly.
But other than that, it was smooth sailing. It was fast paced, the voice acting and music was great as ever, but most importantly the story delivered.
The only real complaint was that they removed Law's middle finger. Admittedly, it would have been fun to leave in, even if they had to blur it out with a pixelated mosaic.
Saboady Archipeligo… great One Piece. Nicely done, Toei.