You crazy... both Vampire Diaries and Nikita are great shows. And Supernatural is the finest show of it's genre the TV has ever seen.
Sure, they make escapist shows, but great ones. And cable? Vampire Diaries has propably 20% of budget HBO shows have and yet it completely annihilates True Blood.
CW does pure entertainment and does it extremely well.
Anyway..really enjoyed the premiere. The tone is great, the hero convicingly bad ass and there's plenty of plot hooks for further developments. And the action looks great.
Vampire Diaries is a good lesson in pacing. It's not a great show. I would never call Nikita great. It's sometimes good with some nice set pieces and action. And Supernatural is a piece of shit after its fifth season. Arrow falls directly into this camp -- it's not good television, but it's escapism. Take that as you will. But there's enough mediocre TV on air as is.
You're also failing to mention: Gossip Girl, 90210, Hart of Dixie, Ringer, The Secret Circle, and the upcoming abominations Beauty and the Beast and Cult.
At the same time, if you liked it, you liked it. I just don't think it's in their wheelhouse to ever make compelling television. They want escapism and they hit that mark from time to time.