It's too early to say for sure, but the Cowboys have fewer rookies making significant contributions than most teams I've watched. I disagree that most or all of the players in this draft were developmental players. This team is just not good enough to draft developmental players early. In fact, this team is not good enough to draft them late.
Yes, Skyler Green was a bad pick, especially as early as the 4th rd. I disagree who we should have taken instead. Rob Sims, a 2-3 rd. player who slipped down to the 4th would have been a steal at that spot....or Elvis Dumervil, who was taken one spot after Green. Elvis now leads all Denver defenders with 5 sacks this year, which is twice as much as the next player or DeMarcus Ware.
So, I would say, judging the early predictions, this was not a very good draft. Here's hoping Carp & Watkins can come on the next few years to make it average, at least.