In the words of Steve the Homer True, I'm "cautiously optimistic" about the Crew for the 2nd half of the season. Obviously, they're playing poor ball right now. But, they're only 2 1/2 out and they've weathered the toughest stretch of their schedule with McClung and Mike Effing Burns in the rotation (by "weathered" I mean "did not get mathematically eliminated from the playoff race".
If Parra can be anything like he was in his return, and Bush can be himself pre-line drive (and Gallardo goes back to how he was before these last 2 starts), I think the rotation will be greatly solidified. You can do worse than Soup/Loop as 4-5...but when they're 2-3, as has been the case the last couple weeks, you're going to struggle big time.
The offense will be inconsistent, as always...if the starting pitching can at least keep them in the game most nights they could win a decent chunk of games the 2nd half of the season.