So I've gotten my hands on some of the B5 script books and behind-the-scenes books, and I found THIS GLORIOUS THING. This is from JMS's original episode breakdowns for season 5, after all the editorial messing around and after the broad season plot was roughed out, but before the general plot arcs of the season had been solidly assigned to episodes yet. 

"Stabbed by Narn (Na'Toth?) -- some disappointed he is not striking [at] Centauri, accuse him of getting too close. Londo at bedside, "I should have been protecting you." Finds his attacker (Na'Toth, scarred physically and mentally), who is threatened by/does not understand his change. Strike again, so come back even stronger. Embraces, heals wounds. Healing ceremony, even Londo comes." 

G'Kar in a hospital bed with Londo hovering over him! I should've been protecting YOU. 

Londo at a Narn healing ceremony to support Na'Toth and G'Kar!


(Скопировала текст из тумблера, ссылку не даю, они там постоянно потом исчезают).