Its got Rhona Mitra in it, so it can't be all that bad.
All in all, I think they have managed to keep me through the beginning of the next season at least; this half-season has been a lot more interesting than the first half.
The first half of this season was an extreme disappointment, and I think they lost a lot of viewers because of the excessively slow start. The second half has proven to be quite a bit more interesting, with a more Stargate-like feel to it. They still have quite a ways to go to actually be a better Stargate series, but they've managed to keep through the off-season too and see what they do with the first half of next season.
They came very, very close to losing me in the first half of this season...