That trailer is neat, and when I first saw it, I thought, "Wow, that would make a great movie!"...
But the more I thought about it, the more I realized that it's mostly just a bunch of action scenes strung together. The only words she speaks in the whole trailer are, "I don't think so." We don't get any sense of what such a movie is about, other than she's captured by Nazis and escapes. As far as movie trailers go, there's not much of a hook to make me want to go see it, other than the fact that it's about Wonder Woman. A real Wonder Woman movie would have to convey a lot more about her character and what it's about than just, "She's a badass fighter," because I already know that.
As for the costume, meh. In spite of the grief a lot of artists get about impossibly impractical women's superhero costumes, there's no getting around an expectation of what they should be like. Still, it needs to be at least semi-practical. Comfortable boots that she can run in, something that's tight enough to be recognizable as Wonder Woman but not so skin-tight that it restricts her movement or that would involve using glue or tape to wear. Being more of a hand-to-hand warrior type, I think any kind of armor would be sort of silly. In spite of everyone having a cow about it, I actually thought that the Adrianne Palicki costume was pretty good (
the later one, not the shiny disco one), though the top was a bit impractical. Maybe if it came up a bit higher and had straps over the shoulders or something, I dunno.
But one thing I absolutely think is that it is WAY past a Wonder Woman movie and/or updated television series. I hope that DC is kicking themselves after turning down Joss Whedon's script, and then he went on to write The Avengers, a best-selling blockbuster that beat all kinds of records.