Dc will probably never get another shot at the shared movie universe. And I doubt they will ever attempt it again. They had their window and missed it. Literally all evidence points to the contrary that they are already planning a go at it.
Anyway I think Diana is a very different animal than Clark or Bruce. If Clark or Bruce are supposed to be 16, 25, 35, 50 or beyond years of age. Then that’s going to seriously inform their characterization in the story you are telling.
For Wonder Woman though? Whenever I read her I have no idea if she’s supposed to be 20 or 2,000 years old. And it doesn’t really matter! She almost never comes across as young Diana or old Diana, she’s kinda always just Diana.