3. Wonder Woman - Jennifer Lawrence
The cancelled reboot of Amazon means Warner Bros. are not going to rush into anything regarding Princess Diana that's not 100% up to scratch and this to me, is a good thing. Wonder Woman will be the most important decision that DC need to make because getting it wrong could destroy the whole franchise. Not only does Wonder Woman need to be stunningly beautiful and mysteriously alluring, she also needs to have an inner toughness with just the right amount of vulnerability. Enter Jennifer Lawrence. Lawrence is actually the perfect choice as she combines genuine acting talent with drop dead gorgeous looks but the main reason she gets my vote is because she has already perfected the role as Katniss Evergreen in "The Hunger Games". She might not look as exotic as others being rumoured for the part such as Jaimie Alexander or Gemma Arterton but that wouldn't really bother me. "Justice League" can stray from the source a little bit and in my opinion, having a young Wonder Woman makes sense compared to others. The only problem might be her involvement with "X-Men" and "The Hunger Games" but that shouldn't be a major stumbling block by the time the JLA movie rolls around. She will be finished with "The Hunger Games" series in 2015 and even if X-Men: Days Of Future Past is hugely successful, I'm sure she could still be persuaded to become Wonder Woman.
Notable Mentions: Gemma Arterton, Eliza Dushku, Olivia Wilde