Our representatives listening to lobbyists more than us is a clear indication our methods of selecting and keeping them accountable are seriously lacking. I understand the allure of direct democracy, but the rational approach is to get control of our representatives and not let the system slip.
(I have a proposal directly related to this)
That said, I agree ballot measures are intended as a safety mechanism. They are not supposed to be frequently used. And that’s where I have to disagree with the main proposal; it elevates a mechanism that should be used sparingly to standard practice.
Relating to participatory budgeting by citizens: The idea rattling inside my head right now is to audit the budget with a citizens’ assembly. Basically, you’d call together a large jury of citizens, and they could make cuts to the budget with a 60% vote. The point is they don’t have to think about making policy, only make sure there are no glaring issues with corruption or wastefulness.