I do believe LE has enough significant info on DR to name him a POI. I agree with the other posters about the public's right to know. If it in anyway impedes an investigation then I don't want to know. On the other hand, if the information they have should turn out to be unfounded, why should DR receive anymore negative publicity.
Very interesting point about the search warrants being sealed even to the family. I thought they were only sealed from the public at large. I'm encouraged they found enough to do a forensic investigation. Still concerned though that too much time has passed ...
O/T ... I listened to an interview with criminal profiler Pat Brown. She made the point of how often early in an investigation, important information can be missed simply due to the amount of info LE must sift through in addition to being in the field, doing interviews, etc. Her point was a criminal profiler could be useful in every investigation because they have the time to thoroughly look at all the available information and draw conclusions which can allow LE to focus their investigation in the right direction. Though it's unlike to become a reality, you can see how beneficial this could be for the smaller LE depts who don't have such serious cases that often, let alone not enough funding.