So who do you trust enough to be distrusting parties? This to me seems to be the same problem as making it proof of work: if the incentives are big enough, the scheme collapses. Look at the creativity that lead to caging and other forms of voter suppression
Not sure. I did consider the risk of bureaucracies becoming cemented within the participating organizations, leading to a harmful drift in values.
But you really only need each department to live for as long as the vote is active, so you can dismantle them and reassemble them afterwards each time. Hopefully that would prevent the establishment of dangerous practices and attitudes.
Whoever is managing it must be held accountable, and must work in full transparency.