Would it be possible and desirable to have some automatic prompt for visa-related questions (determined either by use of the visas tag, or just the word visa in the text) reminding question askers to please include their citienship/nationality in the question? It's relevant the vast majority of the time, yet many question askers neglect to include this key information.
If SE team can make it mandatory to have a xyz-citizens with some selected tags, such as visas, transit-visas, etc.. this would be awesome, it does not have to be a hard rule, it can be a message where the user has to click OK or something.
I do not know if this is technically possible, does SE have an audit logic which can be customized for each site? not sure.