That's an interesting theory, and I like it, but would prefer to think of them as being beyond mere mortal flesh, even from the beginning. Sort of like the "human" at the end of Season 4. I don't wish to believe he tranmuted from flesh to energy, but that we became more like the vorlons and became pure energy ourselves.
And, yes, permission for a tee shirt would be fantastic, please and thank you!
*Sigh* it's so nice to see people still love B5. DH and I have suckered in a new convert and are in the middle of Season 4. He's excited as all get out, and I can't stop crying, because I know it will end soon, and once again I will be left heartbroken at the image of Delenn watching every sunrise...
And Ivanova? Ivanova is GOD. (Just ask her!)