An interesting website which has a lot of behind the scenes information about the art of Babylon 5:
http://www.themadgoner.com/B5/B5Scrolls/B5Scrolls.htm
https://www.facebook.com/B5Scrolls
There are interviews with the graphic artists behind the series and how some of the ships came into being.
It seems a B5 MMOG was actually on the cards at one point:
http://www.themadgoner.com/B5/B5Scro...m#Screen6_03_1