Would't anything Firely/Serenity related, in 2012, be a license to print money? Seems like 80% of everyone under 35 on the Internet loves the show/film. How could a new film miss $200 million? Or a resumed TV series miss top 10 Nielsens? If anything, the Firefly meme (it seems, I wasn't in on the ground floor) has gotten far more popular over the 6.5 years since the film Serenity came out. It's beyond fanboys-only status these days, isn't it?
Heck, they could probably just re-release Serenity in theaters this summer and beat the 2005 gross several times over. Seems to me A LOT of fans were just late to the party.