I tend to find with TV programs, over-analysis kills, start trying to explain too much and the whole things collapses like an over-cooked souffle, that's why most TV series spin-offs and follow-ups never, or at least very rarely, live up to the originals.
Take Babylon 5, in a way, I'm glad the Lost Tales seems to have ground to a halt, part of what made it appealing was the fact that, even today, people can discuss things like Kosh's motivations etc without having the producer lay them all out on a plate for you, that kind of mystery maintains interest.