Now I haven't heard anything regarding this show's future or lack of but, I personally would not like any more episodes. Why? It's perfect the way it is (just like Faulty Towers). I've only watched the shows and movie once and plan on watching them again soon and maybe I'll find that other aspects of the show could be explored. If, and this is a big if, if a second season is greenlit I will be excited and pray they use the same actors, writers and don't fuck it up otherwise I will have to pretend it never happened (like the Star Wars prequels).
I only came to write this cause of the Big Bang Theory show mentioning Firefly in an episode I just watched and needed to put this out there.
Again I've not heard any news about the show so this question is completely hypothetical.