I'm only three episodes in again, and I certainly do plan on watching the rest, but look: we've seen these characters and plots before. The dialog's clever, I'll give it that, when they're not dropping badly-accented Mandarin into the conversation and killing my suspension of disbelief. But between said Mandarin, the forced western setting, and the echoes of Confederate sympathy, I just don't get the appeal here.
I guess I'm spoiled by Galactica, I never watched Buffy, and there was a dearth of good sci-fi on TV at the time. Those three would explain a lot. If this were on TV now, I might watch it. I'm just confused by the enthusiasm people have shown.