It's allmost absurd that Vader, the icon of Star Wars, gets 2 minutes of screentime in the entire PT. 2 minutes. Lucas says that this is the tragic story of Darth Vader and he couldn't make room for Vader in the script? He said that most of TPM and AOTC were filler, so maybe that's why ROTS feels so rushed. It's allmost as if Lucas said prior to ROTS:"Oh crap! I have to actually finish the story and Anakin hasn't even turned evil yet!" He wasted so much time with JarJar, Qui-Gon and Jango and then continued to waste more time in ROTS with the Wookies and Yoda. Everything else was rushed (the turn, the friendship, order 66 etc...)