Farscape Returns? Without Ben Browder as John Crichton it would be a waste of time. Let us hope for some of the regulars! Did’nt Ka D’Argo die in the PK’s Wars?
He did. Chiana went to Hyneria with Rygel, and Crighton, Aeryn and their baby sailed off with Pilot on Moya.
There's plenty of material on which to base some "filler" episodes. Who knows -- maybe they'll coax Virginia back into her Zhaan makeup?
If they're not too busy with Stargate, I'm sure Browder and Black would make appearances. They were incredibly grateful to their fans and bent over backwards for them when the first Creation convention (intentionally) conflicted with a fan-based con. That was the best convention I'd ever attended.