I actually like Shard's pose in this sketch better than on the final cover. I don't know, it just looks like he's about to attack someone head on, which is quite awesome. All the same, fantastic work, Tracy! Thanks for showing this to the fans
It's a very dynamic sketch. I kind of wish they kept Elias at the front because he is the leader of the Secret Freedom Fighters, but I understand the desicion to put Silver up from. Most people only want to see the main characters, so putting him up front would make it more likely to be picked up by new comers to the series. I just noticed what looks like a green hill zone wall behind Silver.