Originally Posted by
Fuzzy Mittens
You want the Amazons to have been around since the age of the dinosaurs and Diana having been an active superhero since the age of ancient Greece? You can do that!
You want Wonder Woman to have left the island in the year 2024 and become a time traveler who alters history, with the affects she has on the timeline being actively explored? You can do that!
You want to do Wonder Woman but have her go on an epic adventure involving Egyptian mythology?
You want to do a spy thriller where Wonder Woman has no powers but is just a highly trained Amazon trying to avert the apocalypse?
You want to do a Wonder Woman story but set in the year 3000?
You can do all of those things! The canon is your oyster!
And thats not even taking a glance at other things in the public domain!
By the time Wonder Woman enters into the public domain several other DC heroes are available. You could make the likes of Superman and Batman supporting characters in a Wonder Woman story who are awed by how amazing and better than them she is. You could make them Gargareans. You could make them supervillains who Diana must battle.
DC can only claim ownership on designs and depictions of gods which they can claim as unique, not any based on actual mythology or history. So straight out of the gate you can play with Eris, Phobos, Deimos, and others and feel free to go wild to do whatever you want.
You can give Wonder Woman NEW powers!
Such as shooting tiny Wonder Womans out of her fingers. (DC can't claim ownership of that one)
Or controlling the weather like some fearsome storm.
You could have her be blessed by a collection of Shinto gods and given a collection of new abilities.
The only things you would not be able to use is elements that DC could claim as definitive unique elements to Wonder Woman herself. (Such as having the power of flight be specifically a blessing from the god Hermes instead of something she can just do herself)
And the characters! You have the freedom to make new characters! Give Diana a new supporting cast. New villains. New threats and new stories.
The power goes into the hands of the people!