It's so weird that there was simultaneously too much Barbara and not enough Barbara. They set up endless scenes where she's enjoying her newfound strength and popularity but then have her decide to be a villain offscreen.
Wonder Woman's emotional arc is supposed to be defined by her inability to give up Steve but the movie just doesn't show her struggle with it. They have one argument in the apartment but they never give her a chance to show through her actions that she can't go through with it. I think when they were in the weird weed-smoking guy's apartment, when she says something like "we can't give up our wishes," that was supposed to be setting up some kind of personal failing at the second-act break? Like Pedro Pascal gives her a chance to give up Steve and take her powers back and then she refuses, like "oh, I know you won't Diana," and then she gets beaten up by Cheetah?
Actually, here's a pitch: the weird weed-smoking guy said that the only other way to stop the stone would be to destroy it, right? Well, Max Lord said he became the stone. So maybe the scene in the White House is all about Diana trying to kill Pedro Pascal in order to stop the adverse effects of the stone. This would be a profoundly selfish thing for her to do but totally understandable given the fact that she might be able to save Steve. But then something stops her - maybe Steve himself - and Minerva is like "wtf you could've let us keep all of our wishes" and then she betrays Wonder Woman and throws her lot in with Max Lord because hey, Gordon Gekko, greed is good.
This movie really, really loves long monologues explaining things with words instead of showing them with actions. By the end, when Gadot has that big speech about truth and lies and greed at the satellite station, it honestly felt like the movie was trying to convince itself that it was deep.
The wishing stone was making up rules on the fly I swear to God. Sometimes it's a "you don't know what you're giving up" thing (Diana, Barbara), sometimes it's a Monkey's Paw "unexpected consequences" thing (the President) and sometimes it's just a hyperliteral "be careful what you wish for" thing (e.g. the british couple in the pub).
Why, why, why did they have Steve possess another guy's body like he's Pazuzu. It's not even from the comics so they don't have that excuse.
Speaking of the comics, this movie has some of the worst gratuitous "this is happening because lore" stuff I've seen in a recent superhero movie. They set up that Diana can make things invisible right before they make an invisible jet. Why. Also why did Cheetah wish to be a cat. I know she said she wanted to be an apex predator, but no, given how thrilled she appears to be, this apparently this isn't the wishing stone being awfully literal with her request, she just...literally wanted to be a cat. I wonder if she'll sing Memories in the next one.