I had it several times, that I see a deck and think "Hmm it should be an duplicate", but i dont see it in the overview, also not when I open the info window... only when I open it as the full page.
It will be nice if I could see, that it is marked as a duplicate in the info window or best way in the total deck overview "as a little red dot" or something like this.
Thanks for your great work!