Quote Originally Posted by Archangel
I won't say it's impossible, but even assuming that a seat as one of the Yonkou is something that can indeed be passed on why would Black Beard aim to take down Whitebeard, the one man said to be closest to One Piece

Why not one of the other probably much less amazing 2?
Blackbeard is a true villain. I don't see him going for the little man when he can take out the big one.