This episode had a good moment for Rygel. Usually he is somewhat self-absorbed and blustering, but when he talks about how he doesn't know what he's doing (separating the beacon), he kind of shows that he is insecure and scared about something. And he seems a bit embarrassed about not knowing how to do something because everyone always did stuff for him. It shows that there is more to him than he might let others see. A great way to make him a three-dimensional character (I think that's the right term).
I noticed particularly in this episode how well Claudia Black portrays Aeryn as the abrasive outsider. Her response to Zhaan, "Are you laughing at me?" was interesting as well. Perhaps, judging by how she says it, she already at this point does not actually want to be the outsider, but rather acts the way she does as a defense mechanism.
John and Aeryn's conversation about neither of them having a home brought something to my attention. None of the main characters are in their element, at the beginning at least. Even, Crais, the main antagonist for the first season, is taken out of his element very early on. This is nice, it makes Farscape unique.
In many series, at least one of the main characters is in an environment that they know or have been in for a while or are comfortable with. Not always, but a lot of the time. For example, in Doctor Who, the companions are thrown into this new world and are overwhelmed by it. But the Doctor, even when in an environment that is new to him where he has to learn about it a bit, is usually comfortable with the new environment.