It would have to be linked to actual legislative power for it to have meaning.
I’d love that, but I seriously doubt any of the governments that currently make up the UN, and particularly any of the big 5 would have any interest in allowing such a degradation of their (perceived) power. And in fairness, most of them would be roasted by their home constituencies if they dared to give up any power without a corresponding benefit (see: the history of the UK and the EU).
