Ok, I got the whole mission last night. Or rather very early this morning. Played through with sound. Very nice. I do, however, have a couple notes of constructive criticism.
The first thing I noticed was the ambient light level in the mission. It's rather high, right now, particularly on B5 itself. It makes the station look too bright and clean, even somewhat cartoonish, when it always looked kind of dull and even a little dingy in the show.
Secondly, it's probably a devil of a thing to try to do, but it would be nice if the comms animations matched better with the actual voices. If this is technically infeasible, don't worry about it.
Finally, what is up with the coloration on those Sharlins? The purples are too bright on them. And the main body of the ship is colored beige? May I suggest you google "Minbari" and "Sharlin" on google images? Minbari ships are a sort of dull more blue than purple color all over with a sort of indistinct striping.
Even the Whitestar looked off, too bright.
At least part of the brightness is probably due to the ambient light level, but I couldn't say for sure.
Hope this helps with the details some.