Babylon 5 is one of my all-time favorite TV franchises. I remember reading about that game and being extremely pissed off when it was canceled. But I can't imagine GOG releasing an incomplete game.
And about Crusade... I liked it. It wasn't nearly as good as the main series but I liked the general concept of it. Too bad JMS was getting so much crap from the network people, it killed the show off before it had a chance to fully shape itself.