Missing from the constitution

The US constitution was revolutionary for the time. However, I believe that a few things are missing from the constitution that should have been included

• Term limits: people live a lot longer and are in office forever. Twelve years is enough for anyone.

• The electoral college was intended to elect the president. We should enforce that by mandating secret ballots for the electoral college.

• The US was supposed to be a Republic. Therefore Impeachment and conviction should be decided by congress, not the voters. Congress should use secret ballots

• A mid term public vote of no confidence that would remove the president and replace him with the runner up for his party's nomination

• A definition of the lifespan of a copyright/trademark

• The modern phrase, "Congress shall have the power to enforce this document by appropriate legislation"

• A formal process for the succession of states or group states from the United States

• A formal process for the citizens of The United States to petition the Supreme Court to review the constitutionality of a law or practice without having to frame the question as a case between two people

• An expiration date for the Constitution that would automatically trigger a Constitutional convention