If I were judging, I think I'd be more likely to not like how blurry the back pieces look than the little bit of darker spots. I actually like that part, but I might not score up as much as I might without the darker areas. Having uniform pieces I think helps with appearance, but I don't think I'd care if there was any sauce on the box lid.. that just tells me the cook put as much in as he could, and I couldn't count off for it, I dont' think. It's not like it's pooled in the box.
Online judging for appearance is tough... you get all day to stare at the photo and pick it apart, where in the tent, you get a chance to look it over and it's gone on to the next judge. I've noticed that on the BBQ Forum, and I posted a pic of brisket on another forum, not even asking for feedback, and got someone's opinion that it looked dry. I wasn't asking, and you can't tell everything from a picture taken outside under an EZ Up right before turn in.