First we need a federal initiative/ referendum system. Because the existing politicians will never vote to limit their own power.
After we have this, we can start with initiatives that set maximum ages, fix the voting systems. Fix Roe. Dismantle the terrible stranglehold the two party system has on getting anything done.
Do all the things that are popular but politicians will never do.
Direct democracy has shown to be a pretty bad idea. It's useful here and there for certain things like referenda, but to use it for everything? Fuck that, no way. People are fucking dumb and are already constantly voting against their interests.
I mean just look at Brexit. And that would be just the tip of the iceberg if we ran our entire country that way.