" 
 ::Template:WikiProject Cue sports and Template:WikiProject Snooker should both do the trick, since they're generated by the standardized project banner meta-template. Because of the overlap between the projects, the relevant categories are Category:All cue sports pages minus snooker and Category:All snooker pages, respectively. Anyway, it's an awesome idea. I find it increasingly difficult to do meaningful maintenance and anti-vandal work for either project because my personal watchlist is many thousands of items from many, many topics. It's therefore very hard for me to see any kind of patterns, like a noob showing up and making sneaky edits over a few weeks to all Scottish snooker player bios, and things like that. Such a pattern would stick out like a sore thumb with your tool. — ''''''    ʕ(Õلō)ˀ  . "