Well Quincy's very likely to be a starter next season, why is he so bad? He lead Dallas to a 10-6 last season.
Actually, the defense led them to 10-6. Quincy just held them back from being even better, although how they got to 10-6 to begin with still escapes me. Carter just doesn't seem to have the decision-making to be a successful QB, and now the running game is being gambled on Julius Jones. Another thing, who is your CB starting opposite of Newman? Mario Edwards was a glaring weakness in the Cowboys D last season, and I'm not sure a whole lot is being done to remedy that. If they do pick up McKenzie however like you hope, that will be a pretty formidable D.