Great chapter! This, for me, is the best arc at this point since Skypiea (not including Marinford, as that was built up in and around other arcs). Great mix of characters and plotlines. I can sense some major twists in the works. I love how Oda weaves situations together and connects them all at the end. Pure genius.
I don't think the plan on Sugar will go so smoothly. It'll probably be a battle before Sugar eats the tatababasco, and knowing Usopp it'll be a fun battle. Hopefully we get to see Robin go all out.
I wondered how Oda was going to use all the colosseum fighters in the plot, since there was so many. But having them all turned to toys keeps them all out the way in their own struggle. Cavendish will be the main focus, and by having a split character in Hakuba, the affect of being turned into a toy may not be the same for him as the others. But if Usopp and co succeed, it wouldn't make much of a difference unless they let Sugar escape somehow (but defeat Trebol at least).
Highlight for me: Sabo blocking Burgess. His fighting style most likely stems from Dragon. I think the fight will change if the toys in the colosseum become human, and the rules will be abandoned making it an all out chase for the devil fruit (if it even is the DF, knowing Donflamingo it could be another scheme which would explain why Diamante looks too calm against fighters of Burgess and "Lucy's" caliber)