I don't think adding a bunch of male super-heroes to the title would get more people reading it, and I don't think de-emphasising all its unique selling points would help either.
The big problem with Wonder Woman, I think, is a lack of consistency. The audience doesn't know what a Wonder Woman story is.
With Batman, people know his origin, Bruce Wayne, Gotham City, the Bat Cave, Batmobile, Commissioner Gordon, Afred, Robin, Joker, Harley Quinn, Poison Ivy, Catwoman, Riddler, Bane, Mr. Freeze, the Penguin, etc.
With Superman, people know his origin, his powers, Clark Kent, Metropolis, Smallville, Krypton, the Daily Planet, the Fortress of Solitude, Kryptonite, Lois Lane, Jimmy Olsen, Perry White, Lex Luthor, Brainiac, Bizarro, Metallo, etc.
With Wonder Woman, I think people would struggle to tell you her secret identity and powers, they might know Steve Trevor, the Amazons and the invisible plane, maybe Cheetah and Ares. DC changed her "made from clay" origin to "another daughter of Zeus", so there's no correct answer to what her origin is. Wonder Girl's origin and place in the mythos is even more unclear. What are the all-time classic, always-in-print, evergreen Wonder Woman stories? I couldn't tell you.