That series was great. Agree absolutely with all you said. It definitely should have gone on much longer since you could really understand the characters and get into the whole theme being portrayed.
Simon: I'm trying to put this as delicately as I can. How do I know you won't kill me in my sleep?
Mal: You don't know me, son, so let me explain this to you once. If I ever kill you, you'll be awake. You'll be facing me. And you'll be armed.
Simon: Are you always this sentimental?
Mal: Had a good day.
and
Simon: Captain, why did you come back for us?
Mal: You're on my crew.
Simon: Yeah, but you don't even like me. Why'd you come back?
Mal: You're on my crew. Why are we still talking about this?