I think what we need to start with is an objective evaluation of how good our democracy is compared to other countries. Something like this:

https://worldpopulationreview.com/country-rankings/freedom-index-by-country

This rank would use object criteria e.g.

Is every vote for every office weighted equally?

Does the system disfavor more than 2 parties?

How easy is it to vote?

Are voting districts determined objectively?