@King:
The fact that Viola alluded to the possibility of Luffy becoming a toy means that it will happen.
Or maybe it means that Usopp won't be allowed to sit the climax out and will have to fly over there to prevent Sugar from turning Luffy and co into toys, and we'll have a second chance at both an on-panel Usopp fight and a decent showing of Sugar's power.
I don't see something as HUGE as Luffy turning into a toy to happen so late in the arc, unless Oda repeats the Robin scenario and shrugs it off almost instantly and without any drama nor consequences, which would be a severe disapointment again.
So I hope it's the first: a way to force Usopp back into action.
Also, with Kanjuro there meaning having access to flight, I hope Kin and Kan also fly with him and get some action themselves, cause I still believe and hope the Colosseum fighters will all be eventually dealt with and the real one on one's should be for Robin, Barto, Usopp, Kinemon. . .Which this chapters seemed to "start" pointing towards.
It's already weird enough that out of the 3 strongest subordinates, 2 will be taken out by either arc specific characters (Kyros + Rebecca) or just a very recently introduced character with who knows how much future appearances ahead if him (Cavendish). Usopp just can't sit this one out, and Kinemon has seen a decline in panel-time that could be solved this way.