We already have spoilers for CW tags, but to check if your particular CW is there you risk opening other spoilers. StoryGraph lets you tag CWs that you don't want to read about, and uses that tag to 1. not give you recommendations with those tags and 2. warn you when you click on a book that has one of your particular CWs. I think it'd be useful to roll out a similar feature (even though recommendations are on the back burner right now, just help build the scaffolding for it) but give users the option to click on the warning button and see which of their CWs is listed, so they don't have anything else spoiled for them. For example, someone might just want a heads up for sexual assault, but outright won't read anything with child abuse, so they tag both but want to know which CW a book has instead of not reading the book at all or opening all the other spoiler CWs.