That's an open question and I think everyone would answer it differently. In an earlier essay I suggested that we live in a complex world with a sophisticated division of labor, and therefore all real power should move to the specialized committees. In that model, the legislatures simply appoint people to the committees. If we had 5 legislatures and they each appointed one person per year to a committee, for a term of 5 years, then all the committees would have 25 people. The committees would set policy and pass the laws. I spoke of specialized committees here:

https://demodexio.substack.com/p/why-have-politics-in-the-us...