Sasuke is always a person who is easily manipulated by people and their ideals, so to me he was always consistent because he couldn't think for himself. The only time he had his own idea was really at the end when he wanted to control the world and it make it in his image but I don't know if I should count it because it was similar to Madara's. All I know is that Sasuke was never original in anything he did. To me, he doesn't deserve his popularity.
Sasuke is poorman rukawa.