He does look more lean now which should enhance his mobility. I'm not that concerned with his passing percentages going forward but his split second decision making (sometimes when Kenny was in this position he threw into double and triple coverage) and not knowing how to carry the ball like a RB. Also, he doesn't appear to know how to slide like Andy did but Boykin and Kenny didn't either as both would try and get out of bounds.
Kenny IMHO was under rated as a runner but believe that SR can be a better runner than Kenny or Boykin. If he's truly lost close to 20 lbs., he's going to be dangerous.