Would it be feasible to make new issues available by obtaining particular trophies, that relate to that particular census?
For example, attaining Top 1% in the world for Most Armed could unlock a one-off issue relating to your Nation containing a large surplus of weapons. So it'd behave quite like an Easter Egg issue.
I think it could add a new dimension to running a Nation, by giving you optional goals to aim for.
Perhaps you could take it a step further by requiring a combination of trophies to unlock a related issue;
Most Armed + Most Beautiful Environment = Issue: Depth-Charge Mines wash up on local beaches.
Etc.
It would be all the more fun if you had a page that showed you which trophies unlock these 'hidden' issues, arranged in order of difficulty.