I always thought this case was fairly simple. In every case I have followed on WS people usually come up with very complicated, involved, dramatic, theories about what happened... I remember some here about Holly that involved some mystery jet flying out of the airport at midnight going to Arabia or some such. In reality, the suspect turns out to be someone rather mundane and predictable - a local, that, in such a small community, could be considered a "neighbor". While I am sure there is more to the story yet to come out, I seriously doubt Holly's death was part of some vast international conspiracy, etc.
Perhaps, I think, people want these deaths to be somehow more meaningful if they occurred as part of something big and dramatic and important on a larger scale. It kinda sucks (more) when you realize that its just another killing done by a local druggie over ultimately nothing