Well, it still might be working. The starting pitching has been good enough to outweigh the bullpen and when the offense goes, they're unbeatable. Yeah, we see how ugly it is when the offense doesn't go, and also how much they miss Harper.
On the bright side, it still hasn't hit its ceiling. If it does, look out. If it doesn't, then DD didn't just construct the team poorly, he overestimated its strengths, and with players both young and old.