uh...aren't you pretty much describing the Amendment process already established by the Constitution?
The amendment process requires the approval of 3/4 of the states. Technically (and I believe constitutionally) you would not even need a 2/3 majority to overturn a decision of the Supreme Court, but I used the 2/3 majority as a benchmark to give a large measure of deference to the decisions of the Court. Nevertheless I believe congress has a right and an obligation to act as a check and balance against an overreaching judicial system.
No, that alone is not the amendment process.
That also requires the agreement of 75% of the states.
A 2/3 majority is required in both houses to overturn a presidential veto...maybe that's what you were thinking of.