Freeing the Slaves
If you've seen the rumours about a Gladiator style combat chamber in Ep2 then I have an idea on what it might be. Anakin at one point has to meet Gardula and Jabba the hut and my guess is many more huts to free the slaves. There will be a battle in which Anakin has to fight someone or something in front of the other Huts while Amidala and friends attempt to free the slaves. Just like Luke did in ROTJ except this time there will probably be more Jedi and some of them will probably die in this battle.