None of us *know* what happened--and everything did seem fishy at the outset, as less0305 said--but we are only speculating based on testimony presented, documentation we have read, and other things we may have heard. I think this was a horrendous crime, and it breaks my heart to think the perpetrator(s) may not be brought to justice. I think we can all get behind that--we all want the person(s) who committed this terrible crime to pay for it. I don't know if that person is Brad, although I am not convinced anyone else had a strong motive. A random murder in that area seems very unlikely, though it isn't impossible. It's a shame her cell phone was wiped because I think it could have yielded some good information.
I lived in Lochmere for a number of years when the Coopers were there, although I lived in another area and did not know them or their friends. I worked full-time and didn't have an opportunity to build anything more than a casual friendship with my neighbors. Lochmere can clearly have a "clique-y" feel to it--if you want to play the game.
Although the circumstances of NC's death look really dodgy for BC, IMO, I am very concerned at this point with the prosecution's case. That said, they, presumably, are still far from presenting their entire case--especially the computer forensics. I think that is the big area of concern for the defense, if their opening was any indication.
I do think it is healthy to have discussion, to play "devil's advocate", so to speak, and to hear other opinions. It keeps our brains from turning to mush.