IMO, the Cowboys job is extremely attractive. Why?
Well, if you are able to win a Super Bowl as the Dallas HC, you would be the one that turned around a, if not thee, flagship team of the NFL after nearly 30 of failure and mismanagement.
But if you fail to win in Dallas, pretty much everyone will blame the dysfunctional management of Jerry and family because they are the real issue with the Cowboys.
Just look at how the Bears are courting MM right now. Ya, he didn't win anything in Dallas, but he did have some success in an environment that doesn't make that very easy on any HC to have consistent success.
I may be wrong, but I think the HC position of the Dallas Cowboys is one of the most attractive positions in the NFL.
JMHO