From what I've been able to see the blocking has been rather poor so far. First contact on returns is happening at 5-10 yards sooner than you'd expect.

Second, the returners just don't have that initial burst that is need for great returns. They seem to be hesitating a bit (maybe because of poor coverage) before they take off running. Good returners shouldn't or shouldn't have to dance around back there. They just pick a lane and go.