Yup, Dana has been excellent since he got to take decisions on personnel. He has found some good role players at the bottom of the barrel, and they have been a huge factor in this team being 15 games over .500. Those deadline trades have all been money, and will pay huge dividends come playoff time and next year. Sanchez has 2 years of arbitration left, and Urias has 1, so they aren't half season rentals and will give Dana a ton of flexibility in the offseason.
If the team can get some more healthy pitchers back, the bullpen will improve greatly. Neris isn't good, but you need some guys to eat innings for now, and they still have another ~45 games to play. I don't think he will be here much longer, as other dudes get promoted, but he's fine for a stopgap. The playoff roster for this team should be stacked and worthy of winning it all.