"1. Why would Palpatine tell Vader he killed Padme? I just don't understand that."
As Palps said earlier, his anger focuses his power. Didn't you notice Palps smiling during this scene?
"I still think it would have been better if Padme had lived on so Leia could remember her."
I think it would have worked better if Padme had at least looked at Leia, instead of Luke.
"Cutting this line would have made it true that Anakin killed Padme."
In the film, it didn't matter if it were true - simply that Anakin believed it.
"#5) The voices of the battle droids and the Nemoidian in on Greivous' ship. Could they have been any less frightening?"
Agreed. They are battle droids, not protocol droids.
"Also, I was under the impression that the oil was spewing forth from the battle droid when R2 cut into it, and R2 Just used the shocker established in RotJ to ignite it."
Wrong on both counts. Note the "Oil slick arm compartment" on the upper right-hand side, and R2 most assuredly launched his rockets to ignite it.
