I voted for the coaching because they have made the biggest impact IMO.
We basically have the same O-line as last season with the Brown/Villariel subtraction/addition. These same guys couldn't block anything the past couple seasons, and all of a sudden Teague is looking good, Mike Williams is starting to look like the RT we drafted him for. Sure this line has had brain farts during games, penalties, Jennings vs Abraham in last Jets game, ect., but they are getting better. This is McNally folks.
With that, Drew has had more time, and we are starting to see what most people have been saying, that Drew can still be a dangerous QB when given time. I'll go ahead and say this has alot to do with Wyche.
Willis McGahee was an obvious spark, but don't count out Henry for this season, we will definitely have to give him more than 5 carries a game if we plan on making one last attempt to steal a wild card position. I'll go ahead and mention Daimon Shelton here, he has really come on this season.
I've never had a problem with our WR's to begin with. But last season we did miss the big play capability that Price gave us. The more progress Lee Evans makes this season, all of a sudden Moulds will get more single coverages, and Reed will return to the slot where he's most dangerous at.