daneditor said:

I don't think it would work even if somehow Bob was able to pull it off. After the Obi Wan/Anakin fight the rest of the film is a sombre montage, with a couple of small dialogue scenes mixed in - a Younglings massacre wouldn't fit tonally; plus, it makes no sense anyway: the Jedi are defeated, Palpatine is officially Emperor, why does Palpatine wait so long to attack the Temple?

I don't see what's wrong with the Clonetroopers attacking the Temple during the Order 66 portion of the film - after all, Clonetroopers are shown killing the Jedi, why not show them killing Younglings at the same time?

How about we hear about younglings being killed but not actually see it. I dont think it was actually needed in the film, when Bail Organa comes to the temple and the young Jedi is killed in front of him, then i think thats enough to show that all ages of jedi were killed.