Most illustrations have little to do with the names, though :( I doubt they were commissioned for the cards, specifically. And if they were, it's a piss poor job.
I think these really were commissioned for the cards. The symbolism is there; I like that it's played much more subtly than in most fan-tarot sets. Look at what everyone's carrying and how they're posing!
For example, Rosa is shown on one leg, against a backdrop of blue sky that she seems about to fall into, with the sun above. This mirrors the pose of the Fool in the Rider-Waite tarot deck: http://upload.wikimedia.org/wikipedia/en/thumb/9/90/RWS_Tarot_00_Fool.jpg/220px-RWS_Tarot_00_Fool.jpg
Virgilia is a great choice for the hermit, and, just like the Hermit in the Rider-Waite deck, carries a lantern. Kinzo would have been a better Emperor. Kanon's self-sacrifice is pretty fitting for the Hanged Man, and he's suspended upside-down. The positioning of the Battler and Beatrice dolls in the Devil card mirrors the man and woman in the original card. Black Battler carries the sword and scales of justice.
Eva-Beatrice's design here is kind of weak - standing on a skull for death? That's it? But the World is great.
I think that Shannon and Kanon should both have been the Fool, though. Or Lion.