Recently i bought the spin-off Babylon 5 series, Crusade. I remember the critics when they said the worst about it. The series ended after only 13 episodes! Too bad ... imho it is a great series with much potential. The time i write this i have watched only 7 out of 13 and i feel that it could become very interesting, if "they" let it evolve.
Nevertheless, the series is fun to see even now, full of Babylon 5 universe and JMS style. Do not listen to the crowd, watch it, worths your time**.
**I have to note that i'm a HUGE Babylon 5 fan. I own all the seasons, the movies and Crusade of course. :)