I was just thinking about the IDI and who it may be.
If it is someone who is convicted of a similar crime but who was never suspected for JBR, and the handwriting, hair, alibi, motive, means, etc can all be subsequently proven, then I could not see how this person would not be convicted.
However, if it is someone who is already on our 'radar' (that is has been discussed here) and was basically 'cleared' by the BPD, then provided it is not RDI, I wonder how much work would be involved in reversing this opinion. Like, if some mistake was made where a suspect was 'supposedly' DNA tested and cleared, but the test was incorrect or never taken. Or, if say it was very early in the investigation, before the DNA was discovered in the panties even, when hair samples were taken, but only 'cut' and not 'pulled' hair, (which is difficult to obtain DNA profile) and never DNA tested. There were so many mistakes made by the investigators, that I wonder if people dismissed early on should be closely looked at as first priority.