I think this has been addressed here, but I wanted to basically conglomerate the thoughts into one post to see if I was missing out on any possible solutions. Basically it boils down to the fact that we're pretty much stuck with 2/3 of this outfield unless Wren has some tricks up his sleeve.
There's no cavalry in the Minors that could bail us out at this point with Schafer still a ways off (and the organization not wanting to rush him). There's no real attractive FA's lurking (Sheffield, Dye... no thanks). Basically the only relief that could be had is via trade, and we'd have to part with valuable pieces to get anything worthwhile. I for one don't think it would be worth it to see potential future talent leave when there is no guarantee that the trade will get us to the promised land (See: Mark Teixeira).
So we wait. Maybe give Matty D some more PT over Melky and hope that this was just a slower start than usual. Pray that McLouth somehow works out of this funk and starts looking like the guy in Pittsburgh we traded for. I'm pretty sure no one thought that outside of Heyward our OF would have a combined OPS of .527, 2 HR, and 15 RBI at this point. I did not think it was possible for our offense to take a step BACK after last season, but somehow they did. At least we have Freeman in the wings if we decide that the Troy Glaus experiment needs to come to an end (I have actually been encouraged with his hitting lately, he just has run into loads of bad luck). With the OF I see no short term fix in sight outside of a complete turnaround. I know Omar got some playing time in the OF last season. Could this be a possibility once Yunel comes back?
I've heard statements about how we should expect these players to return to their career averages by the end of the season. There was a post on ESPN about the gambler's fallacy which pertained to that idea, and it may be worth a read: http://sports.espn.go.com/fantasy/baseball/flb/story?id=5157660.
EDIT: Additionally, with our struggles against LHP is there a concern about how LH heavy this lineup might be in the future (assuming we stick with Nate for another year)? Depending on how we arrange the order we could be setting up other teams for more effective use against their LOOGY (not to mention it seems like we are facing a LHP every other day).