Do you really find a problem with the document itself, or the lack of character of those we entrusted it to and the will of the people to demand better?
As Adams said, (paraquoting) the Constitution was intended for virtuous men and was wholly unsuited for the governence of any other. Jefferson expected a revolt of sorts every twenty years or so to keep the government in check.
No stricture in that document can bind the hands or will of men willing to subvert it when the people itself don't demand it.
I think that things have gone so far and that the constitution we have now has been so badly redefined to say things that it does not say, and mean things that it does not mean, that it would be nigh impossible to go back and reclaim it.
Or at least that's how I felt the day I wrote that post. This morning I'm not so sure why you couldn't start overturning reams of law that were not constitutionally based, with the same vigor with which the leftists instituted them.