Schuster just got sent down. Some are specilating that Soroka will come back up soon. Sounds like Fried is closer to returning that Wright is. Allard was great yesterday, but his track record doesn't suggest you can count on him to be a key cog in your rotation.
So projecting to playoff time, we're looking at Strider, Elder (who has been fantastic, but could be a candidate for second half regression), Morton, maybe Fried and/or Soroka, and possibly Allard, Schuster or AJSS. Lots of options, but not enough sure things to feel really good about October. I wouldn't be surprised if Anthopolous goes after a front line starter at the deadline.
Beyond that, yeah, the bullpen is always something that can be bolstered. I'd like one more high leverage guy. And possibly a right handed LF to platoon with Rosario (although Pillar is a decent option there). The lineup is just about perfect as is, honestly, and you don't need to worry about stocking up on pinch hitters anymore with the DH in place.