I almost don't know if I should post this since the past few issues of Snyder's run have turned the guy into a bit of a controversial figure around these parts, but I feel it's probably something worth delving into since people have debated this topic rather heavily in the past and it does seem to offer some closure.
Essentially, Snyder did another interview here, and in it he got into the Joe Chill situation. Skip towards the end if that's what you're after, as some of the critics of Snyder will absolutely hate the glowing praise these guys give Snyder early on in the podcast. Anyway, I skimmed through the podcast, but from what I can gather they actually decided against making the Wayne Murders unsolved. And to Snyder's credit, he seems to have actually taken into account the concerns the fans had. He did hear the "muddies the mission" fears and took them into account in why they eventually did decide that, for now, the murders are not unsolved. The two main interesting points IMO were that:
1. Apparently the reason he wrote the "Some Joe Chill, some no-name" line like that was because it was still being debated at the time. I guess he jumped the gun during that other podcast from last year when he said it was decided on at that point...
2. He actually says in his mind it was supposed to emphasize Bruce's heroism instead of muddying it. According to him, it was supposed to be even more heroic on Bruce's part because he was saving the city that "took" his parents and never let him gain closure on their deaths, as opposed to being a representation that Bruce was really just in it to find the murderer of his parents.
While some of the details are fuzzy, there might be some revisionist history, and it's possible the decision will be changed by the Batman writers and editors again, I do have to hand it to Snyder for seeming to put some thought into what people were worried about in regards to making that wound "open". I actually like Snyder's emphasis on the heroism of it, but I do think overall it's probably better to keep it as it was pre-Flashpoint to deter those who would use it the way many feared. But I suppose the good elements of it really still stand regardless of whether the murders are solved or not: the fact that Batman is faced with a city that does have lots of horrible elements to it and things that directly attack him, but still tries to save it and make it better, is heroic regardless of whether or not he never got closure on his personal tragedy. Hopefully this is the end of it, though again, it's unfortunately not a sure thing given what's happened in the past. I also hope that this doesn't go back into praising the CoO storyline vs bashing it, because we have plenty of that every time a new issue comes out.