There was a definitely lack of 'scoundrel' in the prequel trilogy as well - everyone is very broadly painted as good or evil - Even with Palpatine there was a strong division between the Senator that appeared to be working for everyone's interests and Darth Sidious moving pieces on a galactic chessboard - at least until Revenge of the Sith came along anyway. The prequels really needed some characters with more shades of grey like Han and Chewbacca getting caught up in events