Those who wilfully reject the plain meaning of words will not be persuaded by more words.
The Constitution laid out exactly what the gov't could do, in plain language. Just to make sure certain rights were not squashed by abuse or ignoring of the Constitution, a few key rights were plainly spelled out. Unfortunately, those who oppose those rights have ignored and legislated against both documents.
The real issue isn't whether the BoR was a wise addition to the Constitution.
The real issue is that a great many gov't officials simply ignore both.
You nailed it.
It will be if the libs turn it into a "Living Document".
Again, without a BOR, would the people have been forced to know of the enumeration? Madison, Hamilton, and Wilson thought so. Are they wrong? I don't know, but it is an interesting thought.
Which is why we have both ballot boxes and bullet boxes.