I agree with the general feeling that this is chiefly a scene-setting exercise; it puts a number of Chekhov's gun type elements on the table, to be picked up again when needed without then being new.
(I must admit I only picked up on the stim reference this time round).

There were also repeated referernces to the question of what is right vs. what is lawful, not only in the courtroom at the end. This will of course become important at the point when B5 severs its links with EA, clearly illegally, but we are all encouraged to assume it is the right thing (and through Corwin, we get to consider it again at the time)

It seems at times as if the A-plot is just there to string these things together, although I did like it more now than when I originally saw it (notwithstanding Passing through Gethsemane having been my introduction to the B5 Universe).

Needless to say, though, the B-plot was divine :-)

BTW, has anybody noticed the similarity of laura Rosen's name to Laura Roslin of BSG....