I think the people who draw these have the understanding that Kogasa is not really part of the storyline, so I guess you could say these pictures are "Myoren Shrine Group" themed, yet they are the point of the UFO story.
Personally, I only add the tag if: *ALL characters of the game (or demo when the game wasn't released) are present (borderline case: Unzan is missing, Ichirin is there) *The 3 heroines are in the picture with their UFO designs (post #524396) *The name of the game is in the picture (post #571949) *The game itself or a screenshot of the game is in the picture (post #507682)
For example, if I see a picture with all the SDM residents, I don't add the EoSD tag.
Personally, I only add the tag if: *ALL characters of the game (or demo when the game wasn't released) are present (borderline case: Unzan is missing, Ichirin is there) *The 3 heroines are in the picture with their UFO designs (post #524396) *The name of the game is in the picture (post #571949) *The game itself or a screenshot of the game is in the picture (post #507682)
For example, if I see a picture with all the SDM residents, I don't add the EoSD tag.
I think the tag is fine as is, but would actually like tags for all common groupings, houses, or families (moriya_shrine, myouren_temple, yakumo_family, etc.) more, like it is with team_9, which would make group searches easier and allow game tags to be used like S1eth said.