Great ideas for the droidfactory scene, guys!
Personally, I like the scene, but it's not perfect. I see why Lucas added it (for pacing issues), but the problem with the scene is that it doesn't serve any purpose: it's an action scene for the sake of having an action scene. It doesn't go anywhere. It doesn't add to the characters, nor to the story.
Adding Jango could be cool, but I wonder what it would add. I'd rather see an extra scene with him and Obi-Wan. Better yet, have Obi-Wan kill him in the arena. Their "competition" never got a good pay off: we see them size each other up in conversation first, then they fight, which ends in a draw and then...nothing. I understand Lucas wanted to give Mace something to do, but I think it would have been better for that particular arc if Obi-Wan had killed him.
Anyway, if we're going to add Jango in the droidfactory, maybe we could use footage from the Bounty Hunter game for long distance shots. I like this trailer of the game too. Not sure if it's useful, but it's still cool :P