'One Piece' chapter 815 spoilers: Sanji is from a powerful family of assassins

The storyline of "One Piece" chapter 815 has just been leaked, and it revealed how "Black Leg" Sanji is more than meets the eye for he belongs to a the powerful Vinsmoke family, headed by none other than his own father.
In chapter 814, Sanji's dialogues continued, in which audience learned that the Vinsmoke family are prominent assassins and are quite known in the underworld. It also turned out that the family leads the so-called Jerma 66 (a.k.a. War House), an evil organization that has been causing wars in many countries.
In the leaked page of the manga (via Manga Helpers), Luffy, Nami and Pekoms are talking about Sanji's family, revealing the aforementioned information about the Vinsmoke. Avid fans of the manga are now saying that it would not be surprising if the Revolutionary Dragon, Luffy's father, was their enemy.
During their conversation, Nami could not believe that the "Evil Army" is still existing, although she had heard about them in the past. This is because the army is regarded as a myth. Luffy, as his usual self, is confused about what Pekoms and Nami are talking about.
The Vinsmoke family are indeed a powerful bunch, as they were able to change Sanji's wanted poster status to "Alive Only," as reported by Movie News Guide. This made fans predict that their power extends up to the World Government. Moreover, they may possess some powers — not just physical and magical, but also political — that could destroy the World Government.
Another interesting opinion as to why the family has kept a low-profile is that they may be the "hired or preferred muscles" of either the Celestial Dragons or World Nobles. As Movie News Guide pointed out, this could be possible. However, fans must be wary until it is revealed in the upcoming chapter.