[mehetabelo]

The quality check, which I use until one of the recent updates (the right-click menu was driving me nuts and I couldn't figure out how to turn it off, plus 'disable' doesn't work even with a clean calibre install) so I uninstalled it temporarily while I'm working with a larger database, doing some general large dumps of ebooks. While the QC plugin is nice for this, the database has 30k ebooks and thousands upon thousands have multiple problems.

The reason I believe it is easier to use the duplicate detector first is because, while QC is nice, if you discover that the book you just 'fixed' is a duplicate, you spent a few minutes working on editing a books metadata that was unnecessary, and even in the case of finding books which QC would find, if you have two books, and one has good metadata including isbn, comments, series... and a second book with just a wrong author/title (because they're switched) and nothing else, but the second book is a better format for one reason or another, it's easier to remove all formats from the first instance, with correct metadata and drop the second book into the first with merge. In the long run, this makes it much quicker to clean up a database by skipping over steps (like metadata cleanup) when they are already unnecessary for particular books.

I'm not demanding it be done, I've done a little programming myself years ago, and discovered that while I could do it, it wasn't to be my area of expertise. From that experience though, I realize that while some people enjoy programming, it's not necessarily fun (it can be in some cases when actually getting something to work that's driven you nuts) or quick. I just wanted to note that it might make cleanup an easier job if that was an option.

edit: I just reread your post and realized you meant possibly having QC check if the author/title were reversed, and though my above statement still hold true (in my opinion) it is an option to use QC to do this. Still, I would think based on how the duplicate detector works, it would be better to do it withing this plugin and not QC, it would bring together any possible duplicates and make it simpler to decide which one to delete (and which has the better metadata already)