Many MusicBrainz Releases are being entered with 190-210 release countries, and many users find this data worthless.  Given this direction the data is going in, many users are going to find it more useful to store the country of the artist(s), which is currently constrained to a single country per artist.  However, this data is not currently included in the webservice results for a release lookup.  I think it should be, rather than force clients to make an additional webservice call per artist that appears on the release.