“...we’ll fix those few small flaws in the Constitution that have led us to where we are today”
This should include fixing the lack of limits as to how much the government can confiscate in taxes. There are presently no limits.
That's definitely one. Another will be that each law passed by the Congress must be justified by the articles of the Constitution - no more passing laws to make the political elites appear as though they are doing something. A third will be mandatory term limits - no exceptions. A fourth will be that the Congress will no longer pass its own pay raises - those will be determined by the citizens of each state through their state legislature.
Another one that comes to mind is limiting Congressional sessions. We don’t need Congress in session year ‘round, they only get into more mischief. I say they show up once every two years for 6 months to pass a budget and take care of other pressing matters, then they adjourn and go home. If the president needs them for something between sessions, he can call them back into special session to do ONLY those things for which the special session was called.