Only because he was part of the triplets and the first to go. They were what made us who we where, not one singular player. But after he left the echo still remained through the other 2. But as a whole it was their "heart" combined. Something which, not only ourselves may never see again, but something the league may actually never see again. Making the impact they had on the league just as great as it was for us.
And actually, I hope we all enjoyed it, because I truly don't think we'll ever see something like that again in the league- let alone solely on this team.
Singular Cowboy player-wise though, I'd give that nod to Emmitt or Woodson. With great potential for Witten, Ware and Newman to carry on the torch.
The problem came with Parcells, whom with his uncanny ability wiped the grid clean of virtually any type of leader the Cowboys had grown accustomed to having over the years. His style was no name, no star,...unless it uttered his name afterwards. So quickly it was out with anything we were used to and in with his no names and aging star retreads. Players like Irvin, Smith or Aikman, were the exact opposite of anything Parcells would have wanted. For he didn't like any player that didn't need to be coached, and then in turn lead by example. His example was the only example that was supposed to be. And anybody who ever challenged that quickly found his thumb up on the highway trying to catch a ride somewhere else. Even Emmitt Smith, the NFL's All Time Leading Rusher, didn't as much as get an interview or a sit-down with the new coach. No, cause that "type" of player was the LAST type of thing a Bill Parcells wants to distract the attention away from himself, the end all be all of every place he goes.