IMO it is kanames intent to remove the problim by the roots, mainly the pb's that turn humeans needlessly.
I have however came up with another thery recently, kaname was obviously looking for defrent ways to solve the problims, we know that the night class created the blood tablets and that kaname led the night class. So i wondering if it is possible that kaname altered the blood tablets he is taking him self to where they remove the pb's special abilitys such as turning humans into vampires and the rapid healing and then he tested it on him self. If this is the case then the reason he might have changed plans was cause sara took over the factory. Did those 2 visit kaname before or after sara took over the factory? If it was after they might have been telling him about the factory.
But again just a thery.