The JLAmazons was made up of Wonder Woman, Power Girl, Big Barda, Zatanna, Huntress, the Supergirl of the time, and Black Orchid. It's a good line-up, but I think it would need some tweaking if DC were to revisit the concept today.
Wonder Woman's a natural. She's the most iconic superheroine in existence, plus she's a badass and a bona fide Amazon.
Zatanna's another easy choice. I think teams are much more interesting with magic-users on them and Zatanna's magic is especially powerful.
I also think that Huntress is criminally underused as a female counterpart for Batman. I hated it when they took the new Batgirl identity from her and gave it to Cassandra Cain. Batwoman is interesting, but she doesn't have the history that Huntress does, so Huntress best fills the role on this team that Batman fills in the JLAmerica.
I don't know much about Power Girl and Big Barda, but I like that they're beautiful bruisers. It's an archetype I can't get enough of. Supergirl's cool too, especially since she doesn't look like trouble, but she is. But since she and Power Girl are both related to Superman, I think it would be a lot more interesting to replace Supergirl (who's over-exposed in the DCU anyway) with Mary Marvel, assuming Mary emerges from Countdown a good guy.
I don't know much about Black Orchid either. I know that her JLAmazons design is bad though and that she's completely out of place with the rest of the team. Maybe she'd be cooler if she was the Vertigo version. I don't really care though; I'd much rather just swap her out for Black Canary, who's far more interesting and deserving to be in this lineup.
I'd also like to up the number of members to eight in order to fit in Starfire. She'd make a nice trio with Barda and Power Girl.
Thinking about this made we wonder what a Marvel version would be like, too. What if there were an all-female team of Avengers? Sticking to an eight-woman team, I'm thinking:
Talisman (from Omega Flight)
Molly Hayes (Bruiser from Runaways)
But what do you think? Who should be on DC and Marvel's female powerhouse teams? I didn't go into detail on how I picked the Marvel team, but my criteria were sort of all over the place, so use whatever selection method you like.