I sense that these Crown Corps need to evolve to be insulated against basically unregulated politicians. Perhaps there's a more aggressive model where the Crown Corps can become a fully private entity with strict obligations of reporting to the public, and consistent obligations of stakeholder consults. But hard baked restrictions - like the judicial branch - requiring the Corps staff to fully disassociate from political parties: fully recorded communications, no donations, no public support of any political party.

Unleash them with the sole objective of providing a whatever public good they're supposed to, but without the political interference and the risk of politicians being captured by lobbyists.