Fang Zei said:
Didn't George himself basically admit he only had one movie's worth of material for the entire PT and that he saved most of it for Episode III?
Lucas admitted in 2005 that the PT plot point outline went like this:
TPM: 20%
AOTC: 20%
ROTS: 60%
That is essentially why the last hour of ROTS is a checklist of all of things he couldn't fit in. All of the great plot points we wanted to see where like a greatest hits of rushed scenes.