Not seen Killjoys, and after a quick read-up, yeah, I probably won't start.
As for Dark Matter, it's a mildly entertaining low-end SF show. It's daft, very clichéd, full of circular plotting, characters handily not sharing pertinent info, and convenient twists (sigh"ActivateAgentZero!"sighunlessitwasamisdirectionbutidoubtitcough), and yet I'm still enjoying it despite all its obvious faults, because it's still moderately amusing and sometimes one needs something more lightweight and cheap. Not everything has to be, say, BSG, or more recently, Westworld, which was mostly brilliant, but jeez, it was bloody hard work and utterly joyless.
But as the original seven (including Android) have died/quit the ship for no apparent reason/become a pyschopathic dictator, only 4 remain on the Raza now, and it is in danger of becoming increasingly stupid; but in its defence, crucially the remaining quartet were always the strongest actors and the most interesting characters: Two, Three, Five and Android. So I'll maintain a bit of hope for the show yet.
However, the new Tabor replacement is annoying as fuck in the "he's actually fucking annoying" sense, not in the "he's charmingly annoying" one which David Hewlett is so good at, and last weeks episode was bleedin' dreadful. Yet the SF standard "Groundhog Day" episode the previous week was both a lot of fun while laying out some interesting and quite dark possible future directions (although as an episode it wasn't as good as SG-1's "Window of Opportunity").
Maybe I just have a natural affinity for all the SF shows that basically rip off Blake's 7 (criminals on the run in a [typically sentient or AI controlled] spaceship: Blake's 7 (Zen/ORAC), Farscape (Moya/Pilot), Dark Matter (Android), and Firefly (er, falls down there, but Wash, he's as good a pilot as any AI ) . Dark Matter is not a patch on its three antecedents, and Mallozzi and Mullie are not particularly original writers, but I don't mind dipping into their old SG-1/SG-Atlantis vibe again. (And frankly, I'm still bitter their more serious SGU got axed, cliffhanger and all, having really found its feet towards the end of season 1 and throughout season 2 to become quite brilliant).
In some ways Orphan Black fell into some similar issues as many of these mid-tier arc-based SF shows do (X-Files, when not monstering-the-week, Continuum, Fringe etc): as more seasons pass and they have more hours of airtime to fill, writers can default to layering more plotlines and twists, but they too often mistake complexity and depth for merely being convoluted and the result can be rather trite. While Orphan Black s4 recovered somewhat, and it even had some balls at times in some big deaths, I'm glad it's about to wrap up. Can't praise Maslany enough though for her performances, but at this point the show is now about admiring her performances, rather than trying to untangle who actually is, or has always been, the bad guy. I hope it does have a strong finale, it deserves it, but I fear it's going to underwhelm.
Reading some comments above re Preacher, I highly concur: it was perhaps the best new show of last year, one that manages to be constantly surprising, hugely funny, and genuinely turn-away-from-the-screen sickeningly violent. The motel fight (episode 6?) was perhaps the funniest sequence, anywhere, ever. And then Cassidy shows up.
American Gods is a contender for the best new show of this year.
My Anime education continues... having now done GitS:SAC (exceptional), Wolf's Rain and Cowboy Bebop (both also brilliant), I've now moved on to Neon Genesis Evangelion.