Two nits I found the first time I watch this ep:

When Lady Morella(sp?) comes aboard B5, Vir has to have Londo explain to him why she uses the royal plural. Isn't Vir from a family with some influence(how else would he get into the diplomatic corps), and shouldn't he know about this tradition? I believe the technical term for this loss of memory is "playing the cabbage-head."

There is a major Continuity Error in the scene where Lady Morella is sitting in front of a mirror and talking with Londo. Every time the shot faces into the mirror, we see that Londo is standing almost directly behind Morella, but every time the shot changes to a close up on Morella, we see only the wall and furniture of Londo's quarters behind her. Where did Londo go?

Rememeber Londo's and Vir's posting to B5 were thought as jokes, so the Cottos may not be that important.

When General Smits informs Sheridan about Nightwatch taking over station security, he says that the orders came from the political office. I assume he meant the Ministry of Peace, since they're the ones who control Nightwatch.