I don't think the male characters need to be "ditched." But they can definitely have their importance downplayed some.
Totally agree on bringing back Diana's female supporting cast. Donna, Cassie (sans Stupid Demon Armor), Artemis, Nubia? Throw in Io, and sold!
Athena's influence? I'm thinking that reveal may be coming. Azz has been subtly hinting at Athena's presence for a while now. I'm hoping she shows up in a big way and your idea that she may have secretly trained Diana would be a great reveal.
Downplaying the Amazon's participation in the sex raids? Hells yeah! Having Diana teach the Amazons to be more gender-equal? That's just about the only thing that can make all the other badness from the Amazons worthwhile in the end. I don't mind the Amazons starting out savage, but I want to see them EVOLVE into the great women I've always loved and admired.
So, pretty much this ^^^^^^
Yup. Again, the only reason why I've tolerated the sex raids is because it gives the Amazons a dark past to motivate them to move on and leave that past behind them.
Having them take care of their sons, who they abandoned, as part of their atonement for past mistakes is a great starting point.
I love the idea of Diana empowering women. Both in and out of her role as a hero. I'm usually not the biggest fan of the Diana Prince secret ID, but if "Diana Prince" were to start up some international organization dedicated to improving the lives of women all over the world? I might just warm to the idea after all.
Even if she doesn't start her OWN organization, I'd love to see Diana start working with organizations that already exist in the world. This doesn't even have to downplay her superheroics. Story ideas abound with her doing stuff like this. What if Diana finds out that a supervillain is secretly behind a human trafficking ring? What if Diana discovers that a sudden surge of women turning up at battered women's clinics is the result of some kind of "Hate Demon" that's inflicting their husbands with some kind of insane misogyny? What if the DC equivalent of Boko Haram is holding girls hostage, and he's infused with the power of a god, so that the U.N. literally CAN'T rescue those girls without Diana's help?
And I can't agree enough with the idea of Diana advocating more women on the League. Honestly, I can't fathom why she hasn't done this already. Let's just hope that after this new Crisis (if that's what we're heading for), the League comes out of it more serious about doing their jobs right, and they finally recognize the need for a REAL roster expansion. One that will hopefully see Diana help to bring in a ton of deserving heroines.