I’m suggesting this only be something we find out right at the end, though - what a surprise this would be. And her origin would still be different - she’d be a human infused with the powers of (let’s face it) a “real” alien who is practically a demigod.
Look, one thing the Marvel Universe has got right is in tying stuff together - the Red Skull uses the Tesseract, Loki’s after it, it is one of the Infinity Gems and so is the Aether, which is now with the Collector…this ties everything from Capt’n Yankee to GotG together. Ditto tying Hulk to the Super Soldier serum which is tied to Iron Man through his dad. Everything is in the same Universe, and real Gods don’t exist because even the Asgardians acknowledge their own mortality and superior tech.
Instead, DC has Superman from Krypton co-existing with the Oans, which is cool, they’re all superpowered aliens…and then lets throw in the actual Greek Gods in there? That’s not going to work very well. The recent DC heroes have been very tech-SciFi, even Man of Steel with the Kryptonian armour and ships. You can’t really just chuck “Ooh, Magic!” into that, it’ll seem off somehow.
The alternative is to go the “They’re not Gods, just super-powered aliens” route, which post-Thor is going to seem a little…dreivative, wouldn’t you say? I realise that’s par for the course in the comics but in the movies, that kind of perception of lame copying could be damaging.
Nope, but they’re both super-science (I mean, c’mon, “Z-rays”? And *Thor II *has that wonderful scene when the Asgardians are all “This is the Loom of Fate” or whatever and Portman is all “Cool, a Defragged Molecular Discombobulator!”) I’m not saying it’s all hard science, but it’s all relatable to each other. Real Gods, not so much.
Also, Wonder Woman’s origins really aren’t going to matter to most people who will watch her movie. Tying it to something they already know isn’t going to piss them off, it will help them accept the whole story, IMO.