I agree that Deathwalker was a weak episode (one of the weakest of season one, in my book). The Psi Corp and the telepaths become major players as the season go on (and Bester becomes a semi-regular by the end), but I think many will agree that problems in season five and the early cancellation of Crusade leave that story without *complete* resolution. Hopefully The Lost Tales will give us that.
And what is with this Mimbari - Minbari debate? It's clearly Minbari, I don't understand what all the back and forth I've seen over time is about. Some inside joke from back in the day when I wasn't watching the series?