Most of the smaller expansion packs for Imperial Assault have been there to use as "upgrades" for tokens that come in the larger sets. Well, this time around that's not the case. The Alliance Smuggler and Bantha Rider are all-new to the game. So you've got the chance to change up your game a bit more than you usually would with these new sets.
As with all of the other mini-expansions like this, you get a whole lot more than just a little plastic figure. There's extra side-scenarios for the game that you can play, along with extra equipment and upgrade cards unique to the sets. For example, you can get the Smuggler's Run card from the Smuggler pack (obviously).
These sets are available near you or in the Fantasy Flight Games online store.