ST:TNG worked better specifically because it was not serialized for the most part, and individual episodes were not building toward some specific thing that had to be modified and rewritten and adjusted every time the network messed with the show or cancelled it. It was also generally possible to enjoy episodes after having missed several, as for the most part there wasn't a lot of long-term backstory to need to be acquainted with just to follow the plot.
Yeah, Babylon 5 just didn't give a shit about casual viewers - there was only a very few episodes that had a recap of past event. The first time I was tipped about the series I saw an episode in the middle of the series and was just wondering who, what, why since there was absolutely no way to get into the series. It really wouldn't have hurt them to have a 30 second "Previously on Babylon 5" to give you the essentials.