asking a question and ignoring the answer
If you're going to ask someone their opinion, there's little point in responding with a list of excuses about why what they ask for is stupid / invalid / illegal / impractical / against policy / against ECHR / too expensive or simply inconvenient. That just rubs out noses in it, makes us look like fools for thinking someone actually cared and increases the level of cynicism about the gummint's us-VS-them attitude.
For a kick off, how about releasing ALL the census information. Not waiting until it's 100 years old. Follow that with all the timesheets of government employees, their expense claims and annual appraisals (after all, we pay for them, surely we have a right to know how good / bad they are at their jobs).
Maybe the real answer is just to raise a Freedom of Information Act request: "Tell us everything"