Their Lucas's films to change, absolutely.
Artists have the right to revise their creations, fine. Sure.
Hayden Christensen looks like he's 16 years old standing next to Yoda and Ben! He looks younger than his "son" Luke, with that gelled/grunge long hair that you would
never see in a movie older than 1990. Mr. Shaw looked like a graceful contemporary of his peers in this final scene. Darth Vader, the fulcrum of six movies, has been reduced to looking like a member of Nirvanna. Is this an improvement?