First look at the superhero team show comprised of some very dull characters that the CW are making. If you watch Flash/Arrow, it looks like more of the same, and I imagine that's good enough for most.
After 2:13 the trailer probably gets super-great but that's when I decided I'd had enough: https://www.youtube.com/watch?v=4MubNoWQiSc as that's when Rory from Doctor Who shows up as the DC version of Doctor Who - no, really. I think they might be making this to make the Supergirl show look better. If so, job done.