Hmm, Battle Packs, huh? Here are some prequel ideas.
Gungan Battle w/ Jar Jar Binks (new), 2 x Gungan Warriors (new), Battle Droid & Battle Droid Commander
Battle of Theed with Amidala (Episode I w/ ascension gun), new Naboo Security Captain, new Naboo Royal Guard, Security Battle Droid & Droideka
Droid Factory Chase with Anakin Skywalker, Padme Amidala, R2-D2 & 2 x Geonosians
Arena Battle 2 - Anakin Skywalker w/ green lightsaber, Joclad Danva, Super Battle Droid & Geonosian w/ Sonic Cannon
Invisible Hand Faceoff - Obi-Wan Kenobi, Anakin Skywalker, Grievous & 2 x Magna Guards (new, SA)
Treachery on Kashyyyk with Yoda, Commander Gree (new sculpt w/ hologram), Clone Scout, Tarfful & Chewbacca