Well, I just watched the trailer and here's my two cents. FYI, this is coming from someone who used to read the comics as a kid, specifically the '80s series and before Crisis. Also, from someone who hates so much of the awful programming that's geared to girls and women. (Sex and the City, Vampire Diaries, Pretty Little Liars etc ... I've never been remotely interested)
I wasn't excited when I heard they were making a SG TV series. The still shots of the costume were underwhelming. Now that I've seen the context and had some of the story, I can get behind it. It'll never be the same as the comics, but no adaptation ever really is. The important thing for me is that the writers genuinely care about the source material and they're trying to get the fun of it through, even as they have to update it to make it more contemporary. Michael Bay getting his grubby mitts on TF and TMNT was a travesty IMO. It's painful to see (and hear him talk about) how he doesn't give a crap about the source material.
Let me just say that what I watched of Smallville, I felt was not worth the effort. It pandered too hard to the intended demographic and tried too hard to conceal its roots. I feel like the creative team have learned a lot and that Arrow and The Flash have been much more entertaining to watch. They've successfully convinced that network to allow them more creative freedom and that superheroes can be fun and profitable on TV. I'm going to give this series a chance (three episode standard) and see where it goes. I'm hoping to enjoy it for what it is. I liked Constantine and I thoroughly enjoyed Daredevil, despite changes.
So, in the end, I'm hopeful.