It's not that I doubt you, but what is the source of the information on John's sweater fibers? And where is the stuff about the fibers on the garrote?
I know that pedo/ritual abuse rings exist, mostly facilitated by the internet these days and often involving children from developing or unregulated countries, or children who aren't closely watched, one way or another. But Nancy Krebs notwithstanding, I see nothing but speculation that the Ramseys et. al. were involved in one.
I still tend to think that some pageant pedo got to JonBenet, either continually or just that one terrible night.