I'm seeing more than one scenario and trying to circle back on what LE has said over the past 4+ years.
First we have the sketch released in 2017. (But LE stated either during the April 2019 PC or in the statement released a day or two later that sketch either wasn't of concern or 'secondary'.) So if KAK wasn't 300+ pounds in 2017 and he could have been the killer has LE done a U-turn on the April 2019 'New Direction'? So now the first sketch is back to being relevant?
OR was KAK seen in the vicinity of the trail that day? Not on the bridge, but maybe remembered from the parking lot - i.e., anywhere but some place that doesn't more directly connect him to the crime scene. That is, someone seen in the area but didn't immediately come forward to LE. This guy is basically a pedophile so he obviously wants to stay off LE's radar. In this scenario, he may have not even known the killer was there at the time, he was just there knowing school age girls would be in the area. (One of the alleged witnesses was a teenage girl who witnessed someone in the parking lot and the rest of her group didn't see the person.) Hence, the reason for the first sketch? Maybe later - in 2019 - a witness is revisited by LE and now through the passage of time can't remember if it was that morning just before noon or even the day before if they went twice, so the first sketch is set aside. (2-3 weeks after the April 2019 PC, ISP Superintendent Carter, backs off earlier LE statements at the PC about the first sketch. For some unknown reason, Carter thought that the first sketch shouldn't be disregarded outright.)
Maybe the killer is then the person in the 2nd sketch and he may have a SM connection to KAK? If there is a connection and KAK had obtained a photo of Liberty or Liberty and Abigail together, he had to at least wonder whether or not it was a connection or coincidence. Even if he does suspect there is connection between one of his pedo cohorts and the murder, he is involved in illegal activity. ("Oh yes, detective, I suspected something because the girls' photos were part of my collection of underage girls that I share over the internet." Yeah, right. Don't see that happening. He crawls back into his hole and hides instead.) And in this scenario if KAK had any second thoughts about telling LE, those probably got blown away when LE arrested RL for something that wasn't even related to the murders.
Is it just me, or does anyone see a closer resemblance between the profile photo in anthony_shots and sketch #2 rather than photo on the bridge and sketch #2. And we know by now the guy in anthony_shots photo had no connection or involvement whatsoever with the murders. Maybe just a coincidence.