The sad fact is, no matter what is or is not uncovered/discovered, what is done can not be undone. I always found it curious that the first call was not a 911 one.
Personally I wish they would let it rest, as I fear what could be discovered may be more damaging to Heaths' reputation, as the masses once again speculate whether he was self medicating or not. For me I would rather just let him RIP.