The Dallas Cowboys are on the precipice of going to the playoffs in back-to-back years for the first time since 2006-2007, and winning double-digit games in back-to-back years for the first time since 1995-1996. There have obviously been a lot of talented players to play for the team from 2008 to this point but they have collectively been unable to string together consecutive seasons of high quality.
There are a number of factors that contribute to this and some go beyond the scope of who is, or is not, on the roster. But (assuming Dallas wins at least 10 games and punches their playoff ticket) a lot of credit has to go to the influx of talent that the Cowboys have had over the last few years specifically to set them up this way.