OK, my two cents on the pictures:
Roan, Lumiya, Krayt, Cade, Anakin and Tenel Ka.
Luke(it was mentioned that it is based on a real person, but I have to say mark hammel did not age as gracefully as this picture).
Caedus-I think it looks awesome. I never liked the betrayal cover, I thought he looked like a teenager in it. Revelation was good, but this picture is better.
Mara: unless it was meant to be a 16 year old version of her.
Jaina: just doesn't fit the visual in my head(I'm stuck with the uber sexy bad ass on the invincible cover).
jacen: How in the world can there be such a difference from the caedus pic to the jacen pic?
Corran-just not my picture of him at all, and I don't recall any mention of long hair(could have forgotten though).
Ben: I don't know what Ben should look like, but that's not it(I didn't like the fury picture either).
Boba, I mean, you really can't screw it up, but I would have liked a pic without his helmet on.