A very solid team in an 8 team format. Nothing really you should change. Keep an eye on the WW for a emerging #2WR that might produce better than Mushy. Other than that stand pat and enjoy the season.
I agree, Mushin is the guy I would look to improve on. If I was going to look to improve anything it would be QB, not bad, but not great either. You may look to deal a RB for an upgrade at QB, you have great depth there. Maybe package Cutler and Moreno for a better QB and a lower ranked RB