Yes, with the evidence as we know it, and the evidence that was handed to the GJ, I will agree with those here who look at Reasonable Doubt and cross finger pointing as stumbling blocks to charges and prosecution.
But here's something to ponder: Michael Kane said (in my words): what the public knows is not as it seems. There are more secrets being guarded and I would bet my house on the fact that the evidence brought before the GJ was barely what AH HAD to hand over in order to satisfy those who were pressuring him to call the GJ. From what I've learned, any DA who was worth a plug nickel would have withheld things that would have been used later when building a case. All that is needed to be used by the GJ is enough evidence to find Probable Cause to indict. The case can then be fully pursued and investigated with all the plugs pulled out.
It's even been disclosed that there have intentionally been things redacted from any sources that are being held exclusively for questioning a charged suspect.
So, before we give up on assuming that this case might still find it's way to a courtroom, we have to believe that IF JR is brought in, there will be no open ends leaving ANY reasonable doubt. Felony murder does not require absolute proof that he tied the ligature.....just that he was there when it was and did nothing to stop it. And circumstantial evidence that IS available to us, is pretty damning in convincing me that JR was awake and participating in everything that happened to JB from at least after the time of the head blow. Though I happen to also believe he was involved prior.
I cannot accept that he knew nothing about her death until he might have discovered her body sometime that morning. IMO, because he knew she was already dead and stashed in the WC, he put on the Mr. Cool presentation to all who arrived that morning in order to appear as if he was prepared to be the stoic kidnapper contact and be able to look like a hero. IMO, R's simply thought the cops would go away after no call came and all assumed it was the 27th when the call would come.....that the cops would set up the taps, maybe post surveillance, then disappear until the next morning.
Their friends coming in took care of crime scene contamination and a way to get Burke, and maybe even later, Patsy, away from the house so John would be alone to take care of the ransom details (and disposal of JB's body), Glitch was LE calling in Arndt, and her decision to stick tight calling for assistance. She could have done some things differently, yes, but she knew not to leave because of her intuition.
I would like to blame JR alone, but admit that in the past few months I have come to think PR could have also been involved. It is my OPINION that there were several family members in the R house that were sick to the core and what went on behind closed doors was being carefully controlled and managed for a privileged group of people...some very close to the R's. I doubt we'll ever know the full details, but I am hoping that J. Kolar is right about this case being prosecutable even though he, too, feels it would be a tough one for any DA.