Even if they sign Buehler and a bat, we're all overlooking the same problem that comes every single summer of this decade: when the rotation breaks down like it always does, the bullpen gets burned out, and by August the whole pitching staff is in tatters. And they never have enough to hang in there for a stretch run.
Sure, a tighter defense keeps the pitch counts down, and a blaster offense can help compensate. But we know, the players know, and the frigging front office knows they need more established arms, and way more durable depth in the bullpen.
And as we see every summer, waiting until the end of July is too late for this org to add any pitcher of significance.