I'd like to see a rule out list, too.
Interesting piece on this case on BBC program (warning, skeletal remains shown):
http://www.bbc.co.uk/news/magazine-18529366
found via Mendicino County's page:
http://www.mendocinosheriff.com/missing/coldcases.html on UIDs (who are still not in NAMUS).
Aside from the impacted wisdom teeth, the report says the lack of complete skull bone fusion indicated their age.
Based on some reading, wisdom teeth and skull fusion is usually complete by age 25...meaning they may be a bit older than indicated.
Thus, I am curious as to whether Linda Lovell (LKA 1974)
https://www.findthemissing.org/en/cases/9136/183 and her companion, Stephen Packard have been compared
https://www.findthemissing.org/en/cases/show/14418.
Linda (other photos in her NAMUS image section) and Stephen definitely have an uncanny resemblance, and went missing from Mendicino County in 1974. They were hitchhiking through CA on their way up to Seattle, WA and last heard from/seen/cashed traveler's check in Mendicino.
There are some definite dissimilarities, but I think its worth a suggestion if someone is in touch with CA LE, if only to get it on the county sheriff's radar in case they do discover more remains in the area.
Reading through their cold cases, there were two murders around 1973 and 1974 of a young male and young female who have a resemblance to John and Jane. Probably unconnected, but is does raise the hinky meter.
CarlK, I know you have been in touch mostly with the MP LE on possibles for this case, but any chance you have reached out to CA LE?