It's also absolutely fascinating, now that I think about it, to look at the "War Without End" flash-forward glimpse of Londo and G'Kar and think about G'Kar having been the leader of a Shadow resistance movement for the last 10-15 years, as was apparently the plan at that point - which makes WAY more sense for his worn-down attitude and Londo's "I am as tired of my life as you are" (double meaning aside) ... as opposed to the present version of G'Kar being an itinerant poet-philosopher.

I mean, it also makes sense that every time someone goes to the future and comes back, they change their own future in small or large ways. Maybe that was the original version, and G'Kar got a better life this time. Maybe their confrontation isn't quite the same this time around.