Sam talked about Toydarian's immunity. Essientially, they mentioned force imunity in fluff and they gave them a high willpower. He explain they did this so the GM could play it any way they wanted; either make them completely immune like the droids, or just naturally resistant. So Dono, Yepes, and Dante are all correct.
As for Hutts, judging by the article, we might see two 3's and only one 1, with the Ponderous quality being enough of a detriment to not necessitate a second 1 in a characteristic.
I wouldn't be surprised if they kept Hutts at silhouette 1. They seem to use Silhouette not just as a size indicator but as a classification indicator. Also, Unlike many d20 games, there's no mechanical benefit to being a larger creature (since size isn't directly related to health, strength, or accuracy in this game). In fact, there's an implicit penalty in being sil 2. When attacking opponents size silhouette 0 (some droids, Toydarians, Drawl, and the like) the difficulty of your attack is increased by 1. Conversely, when a sil 0 opponent attacks you, their difficulty is decreased by 1* (oddly enough it does not specify a minimum. That may need to be clarified).
Hutts are already going to be gimped enough with the ponderous quality, best not to give them situational attack modifiers that are hard to keep up with as well.
*According to page 225 of Age of Rebellion - It was the book nearest to me.
Edited by kaosoe



