I've just seen it and have to say it's a little disappointment... :( As a Babylon 5 fan I expected more - maybe it was the mistake and that was the reason why I didn't enjoy it so much... The first storyline was interesting, however the empty corridors of the station didn't feel like the plot took place on the Babylon 5 station. There is no Babylon 5 atmosphere at all. :(
I didn't like the 2nd storyline... the creators wanted to make it interesting, like a new beginning, a possible 'new future threat' with the centauri Vintari. The plot took place on the new Valen class ship, but the scenes were empty. The scene with the big black room with only 2 chairs, Sheridan and the ISN reporter was so... I can't find the word... simple. I know Sheridan mentioned that the Minbari were minimalists well made.but... bah! I didn't like the whole scene.
On the plus side... the CGI was incredible, the few shots in space were very well made and the music was wonderful as well. The modified 'Sleeping in Light' theme at the beginning of the film was very good.
It was nice from the creators that in the story they say that Franklin and G'Kar are traveling together beyond the Rim. That was nice.
At the bottom line, it was not so bad, however B5 fans expect more for sure. I just hope that if another B5 DVD film is made, we will see more characters in it, like Delenn, Mollari or Garibaldi. Faith manages...