Thanks. Doesn't say much. I would be curious what people think it is "derivative" of (if anyone does) since it first aired in 1993.
It's just painful to watch. The story isn't engaging, the space scenes rely too heavily upon CGI while the scenes involving aliens rely too heavily on cheap practical effects that go too far while not accomplishing enough. Less is more when it comes to representing convergent evolution of sentient bipedal life forms. The sets are also too small. It's a 5 mile long space station but all the scenes are shot in tiny little rooms. The deck of Kirk's original Enterprise is larger than most B5 sets.
The space CGI scenes in B5 are nearly as bad as those from The Last Starfighter. Except The Last Starfighter was made 12 years earlier and was novel in how they chose to emulate the graphics from the in-movie arcade game when rendering space combat. B5 doesn't have any sort of meta-reference to itself, it just has bad effects. It's bad in the same way that the Ray Harryhausen clay stop motion animation is bad in Jason and the Argonauts or Clash of the Titans.
Beyond all that though, it's cursed with the same problem as DS9. Space Stations suck as settings for a long-running show. Space craft are great settings. Space Stations are stagnant. Think about it in a parallel context: would you rather watch a film based on Lewis & Clark's journey across the US? Or would you rather watch a film based on a few years of history of a particular frontier fort... say Fort Snelling in Minnesota?