The art was in Yoshihiro's unique style of drawing and the dog designs resemble those found in his other series. So yes, the art of the manga is great even if Yoshihiro's drawings haven't changed much since the 1970's.
The cast of characters is significantly smaller in GDR than in any of the other Ginga books. The cast of dogs include Riki and his family and four wild dogs (Heiji and his brothers). And of course, Gohei and Akakabuto make an appearence; As does Daisuke. As the plot revolves around Riki, most of the frames are of him and almost none of the other characters get any development or as much time to shine.
All in all, Ginga Densetsu Riki is short and to the point. The only people who might enjoy it are those who've read some of Yoshihiro's other works, though this book works well on its own.
