They look pretty decent for their respective parts imo. A lot of people think it's going to be Elizabeth Mitchell (Juliet from Lost) who will be cast as Elsa as she not only looks the part, but is also in the pool of former Lost actors/actresses that Once Upon a Time is known for taking from. As much as Olaf made the movie so much better, I'm leaning toward not wanting him on this show... There won't be much for him to do imo, and he'd have to be an animated snowman... in Storybrooke. Awk. I don't think I'd want Hans either. If Hans is added, I'd only want him to be in Anna and Elsa's backstory.
Rumple's vault was said to only hold things that were either too powerful for Rumple or just things he didn't understand. If Elsa was in there, she must be hella powerful. Storybrooke, watch out. Elsa's comin' to freeze y'all.