Well, lets just save these messages and revisit them halfway through Season 4, and then again at the end of the show. Londo has my favorite character arc on television, and is in many way the heart of the series. It's also why I've come to appreciate Season 5 more. Due to cancellation fears, many plot threads were wrapped up in Season 4. But had the show ended there, Londo's arc would not have been fully told. So I'm glad we got the full story.
Again, sorry if any of this is spoilers. I'm terrible with that stuff!