Sutton is the only back that is big, every teams needs that. I do think they should give Sparks more of a shot but I don't see that happening. I'm not so sure that Garmin is second fastest by the way.
In terms of being scary, who would you rather meet in the hole 220lb Sutton or 170lb Jake Miller?
Mersereau has always been soft, I've suggested that he'd make a good corner but that will never happen. I'm not sure that Butler is ready scheme wise to play alot yet, he will prove to be a force in his career though. The dude is a beast and has alot of room on his frame to get around 220.