User blog comment:WonderfulUnicorn/Awesome but lazy characters that could have made a difference/@comment-5387880-20130114200559/@comment-5896530-20130114205140

Luffy wants every pure hearted and crazy characters to join, so you are about that one I guess.

What goes for Gin he actully did fight against Sanji with some Kind of nuchaku-like-weapons and won. Though he couldn't get himself to kill Sanji because it was he who saved his life by giving him food. Not that Sanji is not strong though.

Thanks for commenting by the way <3