Mr. 2 Bon Clay is most certainly NOT a woman. An okama perhaps, but not a woman.
But his power allow him to be the person he touch, physically.
i.e the "boob attack" he does on Usopp, Chopper and Luffy and get smacked on the head by Nami for it. ;)
Kumadori and Fukurou have proven to be likeable, but not in a bad way like the W7 CP9; as such, their fights should seem more fillerish (despite how good they are) in comparison to, say, Nami v. Califa.
Which is why they had their fight first and the W7 CP9 later.
As for Sanji's weakness, it is not something easily remedied. It is more like a mental scar, it's his subconcious that makes him unable to hit women. Something so bad must happen to him as a child that it is engraved in his mind not to hit woman.
However if you compare between Sanji, Luffy and Zoro. The three main fighters in One Piece and whatever happen currently wouldn't change that. Sanji is by far the most intelligent and the most devious, obvious Sanji is patterned after 007.
And I won't be surprised that the most powerful threat will be from Spandam. We all quick to consider him easy picking but as he says, he has the sword. And what about Lucci's pigeon. Is that really really a pigeon?
It's obvious that all Strawhats will have a fight, it is formulaic and no matter what we rants and wishes, it is all up to Oda.