Fair warning, might ramble off here...
(1) Gal Godot as WW - cautiously optimistic, probably one of the better choices so far. Don't believe me? In the past, WB wanted Sandra Bullock in the role, then officially (100%) offered it to Jessica Biel in George Millers JL: Mortal, which eventually went to model Megan Gale. We've also had Adrianne palicki on TV. All hot women (Bullock included), only 1 can act. NONE fit the role of the exotic Amazonian woman.
That brings up another point. 4 candidates were up for the role of WW - Jaimie Alexander, Gal Godot, Olga Kurylenko and Elodie Yung. At the risk of sounding prejudiced, do you notice the odd one out? Apart from Alexander, all the other actresses tested had foreign looks. So why was JA in the mix? Was she a studio choice (like Katie Holmes in BB or Garner in Daredevil), due to the potential success of Thor? If true, that means Godot was The FILMMAKERS choice (Like Craig for Bond, or Bale for Batman). Hmm...
(2) the announcement states that Godot will play WW - not Diana, or any other aliases. That suggests that unlike Star Trek Into Darkness or even Iron Man 2, the character 'reveal' will not be a big part of the film - her identity is recognised in the film.
The other part of WW's casting was that she would a love interest of Bruce Wayne. So either we have an IM2- type scenario where Batman slowly discovers who Diana/WW is in the film. The only problem with this? Batman is NOT the lead character in the film, IT IS A MOS SEQUEL (remember this.). What if Bruce and Diana are already aware of each other/have a history?
Then we have another trades report that the Flash will make an appearance in the film as well. Suddenly the film looks like a JL movie after all.
BUT the studio have kept saying it IS a MOS sequel, even registering domain names.
The final reports - the villains in the movie have NOT been confirmed, so we don't know about Lex, Metallo, Doomsday. So far, the only confirmed actor in contention is Callan Mulvey, someone who seems to only fit the role of Metallo. However, the casting has been regarded as THE villain, singular.
So put all this together, and what do you get? A JL movie?
No.
A Batman-Superman movie?
No.
A DCU starting film?
Unlikely.
How about.... A MOS sequel?
All you have to do is one thing...
Make Superman the 'villain'.
What if Flash, WW and Batman, etc. Are all aware of each other, and have decided to come to Metropolis to stop the threat of a 'Superman', a being who can kill people with his bare hands, and who's race tried to destroy the world?
What if Superman has to prove himself to these 'heroes', especially to the one who is most distrustful (and most human)?
What if eventually the need for Superman is established by the emergence of a new villain, that only he can stop?
THAT sounds like an MOS sequel to me...