Snipped for space and answers/opinions in blue.
BBM- I think the public is capable of contributing so much more than we're given credit for. I think LE holding back info often stalls cases that could be easily solved. I don't know if it's a pride thing or if it causes too much chaos/work for them to sift through the trash to get to the treasure. I realize sifting through 10s of thousands of tips would get tiresome, especially since many are probably repeats, but all it takes is one. If they get a few thousand tips every time they release new info, it seems like eventually they'll get a tip compelling enough to check out or maybe even one that matches up with earlier tips or someone they've already talked to.
Someone from the public has seen this guy at some point. Family and close friends may not feel comfortable ratting him out, but a gas station attendant, a past teacher or employer, a waitress, a neighbor, really anyone could have seen or known this guy. The picture is just generic enough (I can't decide if he's 30 or 50) that I feel people might second guess turning in someone for fear they are innocent (it would be terribly hard to convince yourself that someone you know is capable of murdering anyone, let alone two children!). More recordings of him speaking or walking would be nice. While walking over the bridge might influence his gait a bit, I do think there would be some characteristics that wouldn't change, especially since he felt safe enough to walk across it with his hands in his pockets.
I also think the hat is distracting. I realize they are probably just covering up the unknown, but I know absolutely no one under the age of 70 that wears that type of hat here in rural Indiana. I know they said to ignore it, but if you're second guessing yourself, the last thing you need is something to cloud your judgement. "Oh neighbor Joe looks a lot like that sketch, but I can't believe he'd murder someone, and he only wears baseball caps/never wears a hat.
Also, I'd love to know if the longer hair and goatee is something they've confirmed or if it's just a suggestion. The scraggly look is still fairly popular here with younger guys (we're a bit behind the trends). I noticed it on many at the fair and many rock the goatee although just a bit of scruff, clean shaven, or a beard seems to be the most popular now. If it's confirmed, someone might have noticed if neighbor Joe cut his hair around that time or shaved off his goatee. Since I haven't seen anything suggesting those things be ignored from LE, they may have a good enough close up from the video to know he had scruffy hair and a goatee.
It does seem likely that Parabon could have been used, but could it have been used in combination with the recording? I'm not buying the witness coming forward months later at all, and remembering with such great detail what this guy looks like unless the particular witness actually knows this person well would be impossible. I understand why LE would fib a bit to cover up the fact they have the suspect's DNA, but I've seen some of the predictions vs actual photos on Parabon's site and some are wildly off. I'm just increasingly worried that someone is going to second guess themselves because something doesn't match.