Majority of campaigns will be boycotts, because the producers pretty much tend to the endorsement side by advertising.
Boycotting capital would be a really nice feature, but it's utopia at the moment. There are numerous reasons why tracking capital is so difficult that it's not feasible.
Sanctions on types of countries may be useful, but only if they go on all countries of that type at once. Probably it will not be full boycotts as those cause hardship on people who are innocent.