Attempting to drill down to the perp's possible thinking:
Backpack / water bottle evidence left in "Superior" = non-desolate, ~densely populated area and the perp's taunt to LE, him flaunting his "superior" ability?
Remains evidence left in area in Arvada = desolate, sparsely populated and somewhat abandoned area, the perp's "busy" or "work" time, or a staging area, or perhaps a next-piece of a larger puzzle to be discovered?
What was the perp feeling at those locations?
Dropping the backpack / water bottle in the populated area is perhaps a low to moderate risk as to time exposure and being 'caught in the act', a quick cheap thrill of 'possibly getting caught' but if caught, explainable as, "I found this back pack at such-and-such intersection and I thought it belonged to a kid who lives here / close by so I wanted to drop it off where it would be found by parents / kids." If he dropped that evidence over night then risk would be mostly low but still provide a minor 'thrill' and still send a message. I suspect the perp at that time had no other 'evidence' with him.
Dropping the body / remains evidence in the sparsely populated, unlit area (according to at least one interviewed resident in the general area) is none to low risk from arrival to exit but there was no need for a 'possibly getting caught' thrill as I suspect the 'thrill' at that location was derived simply from having what he had in his 'possession' and what he was doing, if anything, during that time.
Also, if there are more remains to be found, are those particular remains / locations part of a larger perceived 'puzzle' in the perp's mind?
Backpack/water bottle evidence drop = Very easy and quick to find.
Partial remains evidence drop = More difficult to find but close enough to a road to probably ensure it would be found sooner rather than later?
What else might be left and if there is anything left to find of the remains or of anything belonging to JR or the crime in general, how does it fit in with what has already been located and with what the perp wants to portray?
What/where is the next piece of the perp's puzzle? What pattern, shape might he be attempting to build/draw?
It seems there is triangulation at this point:
- Abduction Scene.
- Evidence Scene A.
- Evidence Scene B.
- ??
One interviewed profiler has commented his believes the perp might have been fantasizing this crime for "years". Does that mean it's years between when the perp commits his crimes or is this crime his first and there might be more to come, with less-than-years between, now that he's crossed that line from fantasy to reality?
Also, regarding the attached pic .. a possible match?