And considering how prominent areas of the new world were under Whitebeard, the only option he had in front of him could be to take down old man Newgate. The strongest man alive was not one to be taken lightly, and he would definitely not allow the Beast Pirates’ captain to spread violence or even set foot in his territory. If he had similar goals before, then the major hurdle he would have to overcome in order to achieve so would be to defeat Whitebeard. From the recent chapters, especially after his revelation of the New Onigashima plan, it is clear that Kaido wanted to overturn the balance of the world and begin an era of violence.