He wants Power so no one else can ever do what Cazador did to him and he doesn't care how he gets it.
He even tells Tav as much and Tav has the power to stop him from becoming Cazador or let him become Cazador.
He takes everything from Cazador but I wouldn't say he becomes him. He's power hungry, manipulative and possessive but Cazador's cruelty is a threshold he doesn't want to cross and he gets very upset if he's compared to him. Besides, he had other experiences than Cazador, he learned how to have allies and not just servants. The ritual removes the drawbacks of being a vampire that Cazador was tormented by. He already proves he's different with how he interacts with consort Tav in a whole new way than how he was treated as a spawn.
