I forget if I asked about it before, but could you include in the Custom Columns section an option for outputting the various errors for fanfic's? I feel like I did bring it up in an earlier post, but a brief search made me think I probably forgot to ask.
I know one benefit I would get from it would be color coding stories that do get errors as well as filtering them out if I need to run an overwrite always on a couple stories, as well as just keeping general tabs on the various changes; like one fic recently that got a chapter count error because the author revamped their story and compacted chapters together, etc.