http://secrethistoryofstarwars.com/thebeginning.html

This article by Zombie has lots of great material of how TPM could be tweaked, with Lucas's original ideas, to have a little more depth, without really altering the plot.

OBI-WAN: Your style of fighting is old, but I understand it now.
MAUL: You learn fast.
OBI-WAN: You don't bother to learn.
MAUL: I don't have to.

Before Maul can act, Kenobi lashes out and cuts the Sith warrior in half. He studies his fallen enemy and says: "Learn not...live not, my master always says."