I love the artwork on the Llewellyn deck by Anna Marie Ferguson.
The interpretations of the 'shadow cards' of the major arcana are different from many interpretations, often in a brighter way. For example: 13 "Death" in the about of a close friendship developing between two rulers, one of whom is ruler of the otherworld. This otherworld sounds like a much better place than in most conceptions; a more 'otherworldly' place. In the part of the introduction titled "Wales, the land of the red dragon" the author explains that she already did a whole deck on Arthur's legend so only touches on that story in this deck. She also writes a bit about the medieval Welsh otherworld conception in a way that is depicted in the cards:
"To live within the reach of the supernatural is seen as natural, and sometimes a blessing and sometimes a hazard... It is not fantasy but organic reality, seen on occasion through an imaginative lens..."
Other 'shadow cards' treated more positively than I'd expected include 15 "The Horned One" and 1 "The Fool".
There is certainly much lore to draw from the Welsh tradition which the author clearly loves with lots of pithy characters who are both divinely inspired and humanly flawed in turns, like Arianhod of 10 the "Wheel of Fortune". Some of the more famous characters include Myddrin and Taliesin. Then, of course, there is the red dragon, and how could one not love this character who is woven through the cards more subtly?