I broadly see the situation as follows
populism is the failure mode that I can characterize as the two wolves and a sheep problem (voting on what's for dinner), adversarial dynamics between majorities and minorities are exacerbated.
technocracy is the failure mode where you get a bunch of wonks together to look for positive-sum solutions, maximize on behalf of the aggregate, etc., but you're fighting a losing battle to compress information for them (i.e. in the hayekian criticism of economic planning sense).
I guess they fall on opposite sides of a spectrum and I view actually-existing democracies as a constant push-pull, negotiating a sweet spot on the spectrum. I'm wondering if we can dissolve the problem with some truly galaxy-brained social technology.
What can I read to beef up my thinking about this?
Are you open to the idea of sailing right around this Scylla and Charybdis by discarding mass-participation democracy, or must the solution set be within the set of possible democracies?
Because if you are open to less-than-democratic solutions, restricting the voting franchise seems like a promising way forward. On this, try Jason Brennan's "Against Democracy", a critique of mass participation democracy, and an argument for a system where prospective voters must pass a knowledge test in order to vote.
Sure. But you would need to have asked a question to test this, such as "after 5 years what will the size of the economy that grew at 3 percent be, versus 2 percent?
But yes basic competence is lacking. My biggest peeve is legislation that has a dollar amount not indexed to inflation. It's basic math competence. You can argue all day about what a dollar quantity should be in order for the law to have the intended effect but if you write a law you need to at least make the quantities have the same meaning they did when the law passed.