|The Gold Sovereign|
I hope for all the starmetal dragons to be illustrated in this collection, so that we can actually see them all.
And all the alien companions; so far the Draserka, Eshar, Pachycephalosaurid, Proog (Morph!), Thakasa, and Vorac are all unillustrated. Really hope to see art for these in this box, especially considering players are likely to spend a lot more time with these creatures that any non-playable creature in AA3.