This probably isn’t the progressive answer you’d expect, but perhaps under a centuries old definition of progressive: weighted technocracy. People vote only in the field of their own expertise, and leave all other issues to those who have expertise. It is a sort of direct democracy with votes weighted by credentials.
Unfortunately you need an insane amount of checks and balances to make it work without power becoming overly concentrated in a Soviet style steering committee.
Cyteen, by CJ Cherryh, explores this well in a fictional context.
Chasing the dragon again eh