To be honest I assume Hippolyta will probably just be written how Bendis would've written anyone filling Diana's spot, including Diana herself, although I guess the relationship with Black Adam will be something original.
I like Hippolyta but I would've definitely preferred Nubia or Donna in her spot. They both could use more panel time.
Reading List (Super behind but reading them nonetheless):
DC: Currently figuring that out
Marvel: Read above
Image: Killadelphia, Nightmare Blog
Other: The Antagonist, Something is Killing the Children, Avatar: TLAB
Manga: My Hero Academia, MHA: Vigilanties, Soul Eater: the Perfect Edition, Berserk, Hunter X Hunter, Witch Hat Atelier, Kaiju No. 8