Because the Mandalorian wants his help, they get Migs Mayfeld out of prison in this episode to go with them to find Moff Gideon. While I expected to see some of that group again, Mayfeld wasn't the one I was expecting to be completely honest. Overall, he seemed to have the least interesting potential based on what we learned about them.
In this episode, though, he becomes a much more fleshed out character. He starts the episode swearing that there's no difference between the two sides, and he seems pretty indifferent towards what happens because he thinks it will all be the same. Then, by the end of the episode, it's clear that he actually hates the Empire quite a lot, even if he doesn't entirely believe in either side. It does make sense why he'd have left the imperial army considering what we learn about him. While I can't say I care much for him even after this episode, I like that he feels more complex now.
I'm still not sure how I feel about him just being let go considering the things he'll probably still do, but I am curious if that means we should expect to see him again.
At the end of the episode, they are able to get the coordinates to Moff Gideon's ship. Since there's only one episode to go, it's pretty clear that we'll be seeing it next time.