To me it sounds like you’ve gone above and beyond in creating a place where people can find trigger warning if they need to. I don’t think that we need to slap warnings on books in the same fashion that something like the MPA does with films. I think most authors and reviews already point these things out and it just takes a little research to find that information. I think it’s nice that you’ve created a resource for those who need it, but I don’t think that you need to do anymore than you’ve already done.