I'm perfectly happy to simply dump the data as a Perl hash file, with an obvious schema consisting of name, date, URL and state=>value map, and let you import it as you please, but it seems there is a need for three enhancements to the freebase schema system:
1) A time dimension (yes I know about dated integers) based on something akin to atomic action semantics.
2) Inheritance
3) Computed properties (views)
The first two, in particular, are important as exemplified by Google's Gapminder:
http://tools.google.com/gapminder/
The third is valuable since, for example, national data can be computed from State data, and per capita data can be computed from some property divided by the population property of that entity (nation or State or, for that matter, county or city).
