Saw it this weekend. Thought it was alright. A few points that really detracted from my overall opinion.
1) I've never put a ton of stock in the "comic book films have a villain problem" idea, but these villains were dog****. Not as bad as Suicide Squad - that's still the standard for awfulness - but they were not good. Specifically...
- Ludendorff and Dr Poison throwing a gas mask into the room as a joke, going KEHEHEHE and scurrying away. Very laughable. Felt like Rocky and Bullwinkle or something.
- The Ares battle, enough has been said about it.
- This thread took 13 pages for someone to mention Ares' mustache. That was damn silly. Even the day he was defeated by Zeus, he cried in a cave with that silly mustache? The God of War should not look like my uncle. Very, very poor fit.
I get that it's an origin story and the villains aren't really the point, but this was worse than Malekith in Thor 2. Perhaps if Kurse had a twirly mustache painted on...
2) The ending as a whole felt a bit... I don't know. Not well thought-out? The power of love thing seemed to come out of nowhere, as others have noted. The new and likely never to be seen again powers, also as noted. And then she just sends an email, gets into her full armor, and jumps into the air? Not even like, to stop a thief or to protect mankind or anything, just... jump right into that water, I guess.
And I still don't know where she's been for the last 99 years. If WW1 ended on a relative high note - why'd she sit out during WW2?
Also, were we meant to think she was going to drop that tank on Dr Poison? That whole "decision" felt nonsensical and kinda obligatory.
3) The Amazon stuff was all pretty good, and had me engrossed more than I'd expected, but a few jarring thoughts. One is that y'all have trained for a millennia only to get schooled by a pack of exhausted Germans. Obviously we learn that Diana is a demigod, but you'd think you'd wear a lot more armor into No Mans Land given that your greatest general ever was killed by a single bullet. The bracers also made for about 70% cool looking bullet-blocking but like 30% really lame blocking. Actually, the CGI in general was probably 70/30 good to real bad.
But I had to laugh when Diana said only the Amazons are capable of defending the world from Ares. Uhh, by sticking your heads in the sand for centuries as hundreds of wars are waged? Or by getting slaughtered by modern weaponry?
Also, Diana can never learn about her heritage or Ares will find her. But according to Ares, he thought about killing her the moment she came into that military meeting. And if he didn't know then, he would when she charged NML by herself.
I don't want to dwell on the negative, but I guess I had a lot more to say than I thought. Overall, thought it was alright. Probably a smidge below Thor 2 (which is also pretty alright).
Pros: most of the casting, humor, made WW into a legitimate hero, costumes, did some things I wish Cap 1 had done for a superhero war film
Cons: finale, some head-scratcher story decisions, villains, 30% of the CGI, excessive slow-mo (unless that's your thing, to each his own), could have been tighter overall (2 hrs 20 min felt excessive)