2. Term limits
3. 50 Federal courts (one for each state) beneath the Supreme Court. All decisions are based on federal law but decisions only apply to that individual state. Judges of these courts are appointed and their terms set out by the individual states. Only Supreme Court decisions would apply nationally. Supreme Court judges subject to dismissal if President and Congress get 2/3 vote if decisions are believed by such not to be consist ant with the Constitution
4. Sunset provision on all laws, Any law must come up for an up or down vote every century or be discarded.
Still, I believe Term Limits is the key answer to many of DC's problems. Get those entrenched self-serving, favor-giving career politicians out and we would see a change like no other. And no, I am not concerned about lack of experience...you have career appointees who actually carry the water, and most want to do good. However, many of them need to go, also.
Another idea: Shut down any Fedgov department/agency that cannot justify its existence within the intent of the Constitution. Forget the "general welfare" clause. That has been so distorted since FDR, no one even remembers what the FF's meant by it.
But then, DC politicians could try reading other historical documents for the original intent of that clause. It never meant that all will be economically equal. It meant that all will have the "general (equal)" opportunity to secure their own "welfare (livelihood)" as protected by the several States and the Constitution they agreed upon.
Unfortunately, the politicians don't even read their own bills they vote for nowadays, so easier said than done.