BOOKMARK CHECKER should group error types together (eg: all 400 errors).

I have a huge number of bookmarks, so there are always quantities of errors. It would be great help for option to group errors by category, then allow me to delete or white list error types. For example: I might want to delete all 403 and 404 errors, but white list 500 errors. This would be much, much faster way to manage this database. Thanks!