Thanks for the notes on the back design...we'll look into some custom modifications for each deck of the series.
I take this to mean that the back design is (or was at least planned to be) the same for all decks, just changing the color scheme. Correct me if I'm wrong.
Which isn't necessarily a bad thing, considering the other customization and variation between the decks. But if the back design lends itself to having small suitable changes done, then that should definitely be explored Maybe different types of shading could be utilized as well.