On data trustees: The idea is that citizens should be able to donate their data (including private data in some cases) for the public good. This should be handled by some entity that can guarantee safe and respectful reuse of that data and for it to be used really for the public good and not for private profit.

But while it would be good to have such an animal, there are no clear ideas on how to set it up, who should run it and how it should operate.