Quoting Teal, reply 5 It would be possible of course to have a small mod created where just a tech frigate class light ship would be considered "Serenity" and to give them perhaps the pirate stealresources ability, and heavy hull points and moderate shields and to link them with an ally race so they dont have to have a homeworld.
I can see if i can put something together tonight and see how it works and upload it.
I too am a massive fan of FireFly, but did not consider actually doing a mod, but with the right abilities, and an ally race, then i think it becomes workable to have a lone race, with just the frigatelights.
I will let you know,
-Teal
Long Live FireFly!!!!
-Teal
Certain crewmembers of the Serenity are actually Browncoats, the remnants of the defeated Independant Systems. You could consider creating a resistance group of this name.
And yes, this map will work with Distant Stars.
The Undying.
Perhaps a 4th small race called BrownCoats as you mentioned, and have them just have small frigates, perhaps not even a full complement, well... i will have to think about that one... but if they have no CapitalShips then it could be interesting, i mean more credits for the smaller ships, but of course the heavy firepower of the Capitals would be missing too. But it might make for an interesting game.
Perhaps linking them with an Ally as well, so they may have just minor planet defenses and upgrades and the frigates, and if their planet gets over run, then having the Ally should keep them alive, if there are still ships, and if they have a colony frigate, or several of the frigates have that ability, then they could re-establish their HomeWorld. 
especially with Sins Plus!! 
Sounds very very cool!!
You have a wonderful idea here with FireFly and Serenity!! 
Thank you,
-Teal