When I first heard of Holly Hunter's casting I initially thought of her playing Queen Hippolyta. And while she may not 'fit' perfectly with any incarnation we are familiar with, I still felt that she could bring a stylistic gravitas to the role as Wonder Woman's mother.
I can see Holly better fitting 2 other DC characters:
Within the Superman universe (as it rightfully should be) Holly could play the character so many have speculated:
Captain Maggie Sawyer, Metropolis Police Department
I on the other hand would love to see the Wonder Woman universe become more populated by seasoned actors and have Holly play:
Hera, the Queen of the Gods