Something I'm starting to feel is missing from the line is a monster manual of some kind. In the movies, a variety of strange creatures are encountered, but the books mostly focus on the sentient ones.

is it that each planet has its own monsters so it just can't be done? What have you done to introduce exotic beasts into your games>

The beast deck hits some of the common genre ones. I'm sure there will be more decks.

Savage Spirits and stay on target have several.

There's also this handy little resource (admittedly it's not 100% up to date right now) but every little bit helps right?

http://swrpg.viluppo.net/adversaries/creatures/