The idea that you can be added to a watchlist, but you can know why, or by whom, or how to get yourself removed, because you are preserving an individuals right seems counter intuitive to what those rights should be.
Unless, I'm misunderstanding you.
There is also a huge difference between being a suspected criminal and being a suspected terrorists, by how those definitions are actively managed. Suspected criminals are not barred from boarding planes, nor are they barred from banking, or housing, or otherwise. They are simply surveilled in a different capacity, until they are no longer suspected, or a case is developed to charge them. The process does have public components to preserve the rights of the individual.
And as to my cursory reading - you are correct. I didn't see those standards as detailed. I will review them. But my point remains, why not publicize the specifics of those placed on the watchlist, just like we publicize the charges against those in criminal and civil proceedings. How is this different?