maybe it is just me, but I don't feel like Dallas offense gurus put their players in the best position to succeed. I don't feel Dez, Twill, Butler or Beasly are the problem.
Dallas runs lots of single back 3 WR sets.
Dallas needs Dez on the side with single coverage running skinny posts and slants, hoping he can beat his man after the catch.
Beasley and/or Switzer need to be on the other side slot running combo rubs, picks, and clear out patterns forcing 3dbs to cover 2 in a zone.
TWill needs to make his $$$ across the middle.
Butler needs to take the top off.
JWitten needs to do his chain moving square in/out to use his big body as a shield alternately Hanna/Rico need to run seam routes when they can get LB coverage.
Sometimes it seems like Dallas just doesn't understand where the strength of their own players is at, and tries to get the player to fit the scheme instead of modifying the scheme to fit the players.