Time to be pedantic.

The Badger never made an appearance. It was supposed to appear in the film "In The Beginning" but never did.
What appears in "A Voice In The Wilderness" is just a heavy fighter. Chameleon Eclectic, designers of the Babylon Project RPG, found out about the name Badger and wrongly applied it to this fighter. AOG copied them, Mongoose copied AOG. According to Tim Earls, who designed it, "The Badger is more like an F-111 with pilot and co-pilot sitting side-by-side in a lengthened fuselage with the wings swept slightly forward".
For references, take a look at
B5 Scrolls, featuring (among other things) a whole lot of ship designs plus comments from the designers. For one thing, I was wrong on another count - the Gaim did get one ship, a fighter which looks nothing like the Klikkita.
As for the Blue Star, it's difficult to judge size from the first of Eek's photos, but most of the nose section seems to be the cockpit, so guess that it's somewhere around the size of the bridge of a White Star. That would make the whole Blue Star about the size of the top part of a White Star. It looks bigger than a White Star in that photo because it's coming towards you and the nearest White Star isn't.
