Thank you for your well wishes.
There is no need to be offended. My comments regarding the ease of which a grand jury indicts has nothing to do with the investigatory process of law enforcement. If you separate the two from each other, it is perfectly reasonable to say that grand juries are rubber stamps that would indict a ham sandwich without compromising any work that the law enforcement officer has done to get the evidence. Getting good evidence, then, doesn't change the fact that GJ proceedings could indict a ham sandwich.
If you view the intent of the GJ proceeding as being one of several procedural safe guards to protect the citizens from government overreach, as I do, you might see that it is laughably ineffectual. How can a safeguard be effective when the standard to pass through is so low that it can be stepped over by a toddler, or when the very entity that the GJ system is designed to act as a limit upon (the government), is the only entity that gets a say in what gets presented and how it gets presented?
In other words, if the GJ is supposedly a limit on government dishonesty or malicious prosecution, there is no mechanism to actually cull the good cases from the bad. It is a rubber stamp, a box check, with very few exceptions.
If you are a good cop in TN and you have the best evidence in the world, it would be almost indistinguishable to a grand jury from a bad cop who violated the rights of the defendant and who planted evidence. I'm not suggesting that the majority of cops are bad, I don't think our forefathers would have thought that either. But I, like they, know how dangerous a tiny minority who go rogue can be to the vast majority when the government is given almost limitless power and resources. That is why the GJ was a brilliant idea but is now almost reduced to a colon that passes everything through one end and out the other without even slowing it down much.
Finally it should be noted that there are differences between grand juries in each state and between the federal government and the states. Trying to compare one to the others beyond broad generalities can be misleading to the casual observer.