Been working with and around Polis software for a few years, and have had the chance to visit Taiwan to participate in vTaiwan for a few months. Definitely seconding it as massively interesting.
> they are voting paradigms that focus either only or mostly on how decisions are made but not how the options to decide upon are formed.
Just wanted to second your thought here, as we seem to have converged on this independently. I've been speaking similarly about the framing of Polis. Facilitative processes often require cycles of expansion of possibility and then collapse into singular options (whether the options to vote between, or the yay/nay decision). This expansion/collapse is often called the double diamond process.
For example, civil society discussion is often expansion, deliberative assembly in parliament is also ideally about expansion. Putting forward electorial candidates is expansion. Voting (electorial or parliamentary) is purely collapse. Who participates in either the expansion or collapse is a critical feature that differs in all these.
Different levels of expansion/collapse of possibility space are stitched together in our old process, often built on technology of their era, usually created to suit the era of postal mail and telegraphs (communicating electoral results) and horse-drawn carriage (attending parliamentary proceedings). In its prime, Roberts Rules of Order was a cutting-edge social technology that (coupled with other parliamentary democracy infra), allowed as many people as possible to have their views enshrined in governing law.
Most digital innovation focusses on modernizing the collapse process inherent in voting, but it is the less interesting part imho.
Polis is a tool that involves new technology that potentially unseats Roberts Rules of Order as the universal technology of deliberation (expansion). It's dimensional reduction allows for a lightweight process that accepts TONS of participation. It facilitates larger processes where people can participate more directly in issue-based expansion of the possibilities on the way to collapsing into a singular decision or compromise.
It is a deliberation-support tool (expansion), not a decision-making tool (collapse).
Hope this helps others trying to grapple with the significance of tools like Polis :)
Hit me up on Twitter if this stuff is up your alley: https://twitter.com/patcon_
EDIT: Or there's an unofficial "Polis User Group" discord server for aspiring facilitators or server hosters: http://link.g0v.network/pug