Many complain about why Obi-Wan left Anakin to burn to death, instead of trying to do a mercy kill or save him.
I was reading the ROTS novel, and one of the reasons why Obi-Wan left is that he saw Palpatine's shuttle approaching.
Would it be possible to insert a shot of the shuttle approaching? Perhaps insert it just before the jump to the side of the hill when Anakin says "This is the end for you my master." Maybe even have shots of clone troopers approaching too.