I just don't think B5 stands the test of time very well. The resolution to the Shadow War was one of the biggest deus ex machina endings ever, the Minbari were hard to swallow as a serious civilization (it would have been awesome to see humanity eclipse them in a spinoff series rather than continue to play second fiddle to a bunch of religious fanatics), the telepathy nonsense is annoying (as it is in Star Trek, but at least there it's not central to the entire series), and two of the lead characters (Sheridan and Deleen) were Messianic megalomaniacs that needed to brought back down to reality by their respective Governments but somehow managed to elevate themselves over and above their own people.
B5 wasn't the best military themed Sci-Fi series, that honor probably goes to Battlestar Galactica. It wasn't the best at exploring the human condition, that honor goes to Star Trek. It was cool in the beginning from a space geek standpoint when they paid heed to real world physics, but that aspect of the show was largely forgotten by the third season, and some of their tech ideas (like this crazy notion that we're all going to evolve into beings of energy, or that biological ships could be superior to conventional building methods) were as dumb as the particle-of-the-week technobabble laden Star Trek episode.
The best plot line was the Earth Civil War and that got short charged by JMS when he thought the show was going to get axed in Season 4. He was a one hit wonder in any case, just watch Season 5, Crusade, or (god help you) The Lost Tales. I still want my $12.00 back for that stupid two story disk.