Not too much. Perhaps a(nother) declaration that it means what it says.
No, not too much. Here's what I'm thinking - term limits; 1 term in the Senate, 2 in the House. Congressional payraises approved by . . . . . . . . . the TAXPAYERS who pay them. Repeal the 17th Amendment. All laws passed by Congress MUST have a link to their Constitutional authority and there must be a maximum limit to the number of active Federal laws on the books. Also, Congress CANNOT offload its legislative functions to agencies staffed by unelected bureaucrats. In addition, ALL tax increases and federal budgets MUST have the approval of the people who actually pay taxes (those who do not pay taxes don't get a vote, nor do they get federal handouts such as "tax credits", and "tax breaks"; retired persons/seniors are exempted). Congressional sessions shall be limited to no more than 6 months every two years, then they have to go home and live with the mess they made. If the President needs them back in session, he can call them into special session.
Other "tweaks" I would include are that ALL presidential candidates must prove to their respective political parties their eligibility to serve as president AND a copy of their certified birth certificate must be available online for ANYONE to view. In addition, the SCOTUS MUST be limited to ruling on cases in accordance with the Constitution, per their charter. Foreign law, judicial activism and legislating from the bench must be prohibted. Cases for which there is no Constitutional foundation must either be denied OR referred to the Congress to determine if a new law is required (see above restriction on the number of active laws). Federal judges may be appointed for a maximum of 10 years. SC justices ONLY can be reappointed for an additional 10 year term. The right of Initiative and Referendum AND the right of the people to recall ANY Congresscritter or President must be added to the Bill of Rights. Can you think of anything else?