Will the Cowboys have a good season? (if theres a season)?

Will Dallas Cowboys rebound from last year? It seems like their offense is in good shape, Tony Romo's coming back, Felix Jones will probably have a breakout year, and so will Dez Bryant. I think their o-line is shaky, but its way better off then some other teams. The question is their defense... is DeMarcus Ware past his prime? Also, how will their secondary do? Mike Jenkins wont cut it as the leader of that squad.