It's a shame that Joss said he wouldn't want to continue the series if given the chance. Poor Joss.
He didn't say that!!
Whedon's response to the rumor consequently sparked many websites to publish articles stating that he would never work on a sequel to Serenity. Joss again returned to Whedonesque.com to respond to the new stories and wrote, "Holy Mother of Oats! I turn my back for five minutes (that's how long it takes to admire my lovely back) and the interweb goes banoonoos! Isn't there any ACTUAL news to get wrong? Sorry about all this; it might be best if I just stay off the computer for a while....Here's a thing: when Firefly was cancelled, my heart got broke. Sounds a bit much, but it changed me. Not even Serenity could patch that wound. I'm wearier, warier -- after all those years as a movie writer, you'd think I'd be prepared for another lesson on my unimportance in the scheme of things, but I wasn't....All these rumor of projects or the death of projects... When the two worlds align and something actually happens, whatever it is, you guys know I'll be on this site as soon as I'm allowed to be. And I'll be very very clear. There is no news. Not never, just now."[87]
Also:
It has been recently confirmed that Joss Whedon will re team with Brett Matthews to write Serenity: Better Days for Dark Horse comics to be released in the fall of 2007 as we see what happens when a heist goes right and the crew finds themselves on easy street. "This new story will take place in the 'Firefly' years i.e., everyone's alive," says Whedon. "Basically, they pull off a heist and everything doesn't go completely wrong. This, needless to say, has never happened, and it's about how they deal with success."
I hope so!!
But check whedonesque out.