Does anyone else think that perhaps Grievous should have some Vader-esque breathing, in an edit where Vader's identity is less obvious? What I mean is, where he coughs, he should take Vader breaths, and then when Anakin gets left on Mustafar, we don't see Palpers comingand helping him, we just see Vader being built, leaving it ambiguous as to whether Grievous or Anakin is Vader. To aid this perhaps also have Obi-Wan say something along the lines of, "You were my first apprentice." to Grievous, during their duel, so as to leave the ANH talking about Vader, seem more like Obi-wan is ashamed for killing Anakin.