Their bullpen is rough. And I think Peterson is a bit underrated due to last years poor showing with the Padres. In real life with Maybin in center, they're a defensive juggernaut up the middle. But I don't how much that is currently reflected with Betancourt and Peterson coming off rookie seasons. I've seen it firsthand, Betancourt has a lazor arm. Him and Simmons are borderline insane on the derisive front. They should be more fun to play with.
Trade for more of a consistent basher in left and let it roll. Closers can be acquired cheaply as well. They're not too far away.