There has been some discussion about whether a B5 movie or TV series is possible given the lack of great success that a property like "Firefly" had at the box office. However this discussion fails to take into account the rapid changes that are underway in the business of media. Unlike years past, there are now a number of ways for the consumer to see their favorite science fiction shows. For example, there are DVD box sets, netflix and video ipods. All these create a market for a movie to turn a profit ("Chronicles of Riddick" and "Serenity" are great examples of this). The trend is what is important here. These new methods of delivery bypass the networks and/or distributors. The consumer is directly plugged into the producer. This trends toward a subscription based model for movies and TV shows (much can be said about this). This may be the model of the future (or an aspect of it). Strangely enough something like this is already going on with the fans who make "Star Trek: New Voyages". They had more downloads than "Enterprise" had average viewers in its 4th and final year.
All this means that sooner or later (probably later) the B5 universe will be resurrected.
All this means that sooner or later (probably later) the B5 universe will be resurrected.