Yeah, this is an interesting element. Historically, allowing all members a veto, while also having no way to expel a member, means that any such institution is liable to outside meddling. The classic example is the https://en.wikipedia.org/wiki/Liberum_veto -- in the Polish Lithuanian Commonwealth, any noble could veto anything. So all it took was buying a few nobles and it shattered.

[–] CanadaPlus@lemmy.sdf.org 4 points 8 months ago* (last edited 8 months ago)

Apparently, based on that Wikipedia article, they ended up making a new version with less strict veto rules, called the confederated sejm, which is also where I expect all these Western institutions to go eventually. TIL.