I really liked Caity Lotz as Sara (Sara was one of my favorite characters in season 2). I don't think she's the best actress ever, but I don't think she's any worse than Stephen Amell, Katie Cassidy, or Emily Bett Rickards (IMO). I've seen her (Caity Lotz) in a couple of movies since then (season 2 of Arrow) and I've liked her in those as well.
Before the trailer came out, the only reason I was going to check this out because of who was going to be in it (Brandon Routh, Arthur Darvill, and Caity Lotz) and because it's in the same universe as Arrow and The Flash (I really like both shows, though I'm not the biggest fan of season 3 of Arrow). But the trailer made this show look really interesting, and now I'm really looking forward to it.
I think putting all the DC shows and movies in one folder like the Marvel stuff is a good idea.