Remeber that Minbari and Humans can interbreed. At least those who still retain human genetic material from Valen, like Delenn. Sheridan and Delenn will have a son, David.
Do you guys think that any Human/Minbari offspring will be the descendants of them both that will move on to become like the First Ones? They'll stave off genetic stagnation longer than any other race. There was talk about a Minbari migration of souls. This is probably an allusion to a decline in population. When they captured and interrogated Sinclair, the Grey Council discovered that Minbari "souls" were being reborn in Humans and called off the war to prevent the deaths of more souls. Minbari
Their population has been declining slowly for the last two-thousand years. Though the Minbari claim it is the migration of souls, this could mean their genetic pool is stagnating.
So, do you think the mixed race offspring of Humans and Minbari will be the bald-headed being at the end of? Or was JMS strictly saying the Minbari and Humans will both reach Vorlon-level evolution separately as two distinct species?
Everything I've posted above is rendered moot by
The Deconstruction of Falling Stars
Question: What about the other races?
JMS: The Minbari eventually make it; the Narn and Centauri do not. They don't die out, they just don't hit a state of First One-ishness, which is darn close to immortality (barring violence).