About all those suggestions about Sanji getting a fight…
It actually never occured to me until I saw it mentioned around here that Sanji would get another chance to fight this round. I thought it would make for some very powerful character development (or grounds for future character development) if as things stand now was the limit of Sanji's accomplishments in this arc. He did a whole lot of (very shiny) fighting earlier. Now he has come face-to-face with one of the drawbacks to a pillar of his morality (the no-hitting-girls bit). Whether he won or lost that fight is up to debate. My personal opinion is that one of the strengths of many people in One Piece is their willingness to die for their beliefs, no matter what the cost. Sometimes it's selfish – like Sanji putting Robin in further danger through his actions -- but ultimately I give the characters points for sticking by what they think is right, no matter what. Your milage may vary.
Now, given that he had plenty of combat and a massive amount of emotional/moral conflict this arc, I don't think he really needs another fight. I'd be pretty disappointed, actually. It would be a great impetus for Sanji to re-evaluate his strength as a fighter, his morality, and any number of things about himself if he "failed" in this mission. If he lost the only big fight he had.
Now, I know that way back when Robin was first captured Sanji more or less made it his personal mission to rescue Robin, before the Straw Hats decided to do so anyway, together. And I would have absolutely no objections if he did just that, if he went and got Robin. But I don't see that another fight is necessary. I think Luffy and Lucci is more or less set in stone, and rightly so (though I do wish Paulie got to kick him in the face a few times, too, though I know it's not likely). As far as Spandam and his elephant go, I think Franky and Robin are the only people with a… well, (to use the same language as has been used around the forum to describe this), a right to take them on (EDIT: but see below for a good point to the contrary). More so Franky, I think. Plus, I think Funkfried (or however it's spelled) and Spandam are a team, not individual fighters. As in, Spandam would use Funkfried as a weapon, Same as Mr. 4 and Lasso (correct me if I got the number wrong).
So, the major opponents are (in my theory) spoken for already. Plus, Spandam seems to have left Robin on that stairway, so Sanji could probably go get her and bring her back without having to fight anyone. He'd have to get past Lucci, but I think Luffy's the one taking care of that. Future chapters could change that if Spandam goes back for her, but since we're speculating…
Finally, Luffy has also made it his own mission to bring Robin back. And he might even have a bigger "claim" to it than Sanji does. To Sanji, a large part of his motivation is the fact that Robin is a woman, and her honour must be protected. To Luffy, it's a matter of nakama, which, in One Piece at least, wins over chivalry any day. So there's that, too, though I'm not sure myself who "wins" here. I'm just trying to point out that Sanji's "claim" may have been passed on to the Straw Hats as a whole and Luffy in paticular as their captain when they all came to get her.
Another minor point along these lines is that Luffy's already there, while Sanji (and Franky) would have to get there. This applies to Franky too, as I pointed out, so I guess that it's not much of a point if I also want Franky to go kick Spandam's face in again. Just sayin'.
There are problems. First and foremost is that Franky would get more than one fight. I counter this by saying that Spandam is not much of a threat and I don't see him giving Franky much trouble – i.e., it wouldn't warrant being called a real fight with several chapters devoted to it in fine One Piece tradition. Plus, it does appear that Franky's going to be one of the guys, and so might warrant a bit more spotlighting, so two fights wouldn't be all that big a deal from that perspective.
The other problem, what more or less started the line of speculation I'm taking objection to in this post, is that Sanji wouldn't get to fight his own CP9 member. Again, my point is that I think this could be good from a character development point of view. I think he's done plenty this arc, including pulling out a new "move," if you want to call the knife-fighting that.
Feel free to disagree with me here, but I just wanted to point out that Sanji might not get another fight at all, and that this would not necessarily be a bad thing. However, one of the great things about Oda is how he can make storylines and plot points I wouldn't think were very good so completely awesome. So if Oda does give Sanji another fight and pulls it off as well as he usually does, then that's great too.
As a note, I don't hate Sanji, and I don't want bad things to happen to him. I rather like him, actually. So please don't start telling me that I'm just saying this to bash him. Hell, I love Lucci, and I dearly wish someone would cave his head in for him. Preferably Paulie, but anybody would do, really. I just like character development even more than I like Sanji.
–-
EDIT
@Voodzik:
It occurs to me that considering his loss to Calipha, I mean the WAY he lost to calipha, Sanji's NATURAL opponent is Spandam. I mean look at it; Super-Chivalry VS Super Mysogonist and his elephant. A battle for the ages!
Now, I'm not sure Voodzik was even talking to me, but I think he makes a good point. Seeing how Spandam treated Robin, I guess it would be pretty natural for Sanji to take issue with his and have a few unkind words to say to Spandam to that effect.
I'm still not convinced that Sanji gets a "second chance" this round, as I still believe his failure would make for some great inner conflict. But I do acknowledge that it's a very good point. The two might even be reconciled, seeing as Spandam does not seem to be much of a threat and might not consitute a proper opponent for Sanji even if they do fight. I'd also like to point out once again that Franky has hella precedence here. Sanji's values are, as we've seen, pretty important to him, but Spandam destroyed Franky's family as well as his body, and was, to an unknown degree of directness, responsible for invalidating a good part of the life work of his adoptive brother, as well as for the attempted murder of the same. Spandam has a lot to answer for to very many people, and I think Franky ranks at least equal to Sanji on that list.