And shikvala: you're right about the fact that the effects of the Earth-Minbari War wasn't explored enough. This was a bloody war between two alien races that began with a horrible misunderstanding. There would have a lot more than tension we saw on the show between Humans and Minbari, even after ten years of peace.
And one of the things I found confusing on the original show was that Sinclair seem a little on and off when it comes to the Minbari. In Midnight on the Firing Line, he seem to have come to terms with what happened in the Battle of the Line and accepted that the Minbari are Earth's allies. But in the Sky Full of Stars, when he was being held captive and having his mind intruded, he reveals his anger towards the Minbari and how scarred he was by the Battle of the Line. That's Sinclair we should have seen more of. But I gather get that from Sheridan than from him because at least his portrayal of it should seem less wooden and incoherent, and more emotional and consistent.