General Discussion

could overlook this little detail.

The speedy trial rules you are referring to, therefore, are imposed on the prosecution, and not to make trials speedy. It is to protect a defendant's right to it. Just as it is on the prosecution to not interfere with a defendant's right to use all legal means at his disposal, whether or not it delays a trial, and regardless of the time it takes. And there are certainly instances where extending these rights to defendants required four years and more.

And speaking of due process, it consists of far more than reasonable cause and a good chance for a conviction. These are just the two elements whose absence would preclude a case from moving forward with formal charges. And it is the Grand Jury, not the prosecutors, who issue indictments. Or not.

The link you provided is full of meticulously catalogued principles that affect due process of law. And this is just a list of principles. The list of procedures to be followed to uphold those principles is far more extensive. Chapter 28 of the US Code of Regulations that governs DOJ has over 1000 rules listed in it, and all of them affect due process of law. You have to admit, insinuating that the Code of Regulations amounts to nothing is a bit of a stretch. If a thousand rules to be followed in administering justice doesn't call for super duper surety, I don't know what will. And they are certainly required. If the prosecutors at DOJ take undue liberties to speed up a trial for any reason, including disregard for the defendant's rights under the law, the Judiciary, who are actually in charge of overseeing adherence to the due process of law, would be quick to remind the prosecutors of it, up to and including dismissal of their cases.

All this before a trial can actually take place.

You've had your opportunity, and you have yet to identify a single legal source that states how long a prosecution should take. For a self-described prosecutor, not impressive at all.