rpvee said:

I suggest you guys check out the scene as written in Matthew Stover's novelization. It's a masterpiece of writing (really, the whole novel is extraordinary).

I agree. The novel is a must-read for any potential faneditor of ROTS. In particular, conversations between Anakin and Palpatine are brilliantly done.

I also like the end of the Obi-Wan/Anakin duel in the novel. There is no "I have the high ground" nonsense. Obi-Wan jumps to the edge of a cliff next to the lava river, and Anakin immediately follows and gets sliced. Anakin tries to hold on but slips down to the bank of the lava river. Obi-Wan then notices Palpatine's shuttle approaching. He leaves knowing he probably won't have time to go down and put him out of his misery. He needs to save Padme before Palpatine gets there. It makes his decision to leave so much more reasonable.

Perhaps with proper editing it could be possible to get a shot of Palpatine's shuttle arriving before Obi-Wan leaves.