Wonder Woman doesn't really have any friends, does she?
I don't mean supporting cast member type friends, though Zeus knows, she doesn't really have any of those either. Poor Diana is a victim (along with other notable figures like the post-Crisis Flashes and Aquaman) of a phenomenon I call "supporting castastrophe", the complete turnover of her entire supporting cast whenever she gets a new writer. Hippolyta, Etta Candy, Steve Trevor, Julia Kapatelis, Mindi Mayer, Ed that Detective Guy from Boston, the Gang from Taco Whiz, whoever the heck was in the Byrne run, Ferdinand the Minotaur and Rucka's Embassy Gang -- the Legion of Substituted Zeroes has an enormous battalion of Wonder Woman's castmembers.
But I'm not talking them; I'm talking about, well, "superfriends", for lack of a better term.
Batman and Superman are friends. Shovel all you want your Milleresque hooey about their being "naturally at odds with each" and "they could never be friends". Whether they're chummily selling war bonds together or bickering like an old married couple, the fact remains that they are socially paired.
Green Lantern and Flash, the Silver Age Duo, were also socially paired. Of course, in the Bronze Age, there was more of a Green Lantern / Green Arrow thing, but one thing was sure: none of the three hung out with Wonder Woman, sharing a six pack of ambrosia.
The JLA's Weirdo-in-Residence, the Martian Manhunter, has usually been associated with the other odd man out, Aquaman; they were "the Backup Boys". After the classical era of the JLA, their social pairing was reinforced by their work together in the Detroit League, and J'onn's repeated appearances in Arthur's (many many) titles.
Wonder Woman? The only woman in the original JLA was, de facto, a loner. Now, there have been so mighty efforts in the last few years to shore up her role in "DC's Trinity", and great strides have been made in making her a distinct personality with definite relationships with Batman and Superman.
But friends? Despite Brad Meltzer's insistence that the JLAers are all really really REALLY chummy, most other people I know think of them primarily as colleagues of hers. Batman and Superman are, historically and conceptually, paired with each other. "Batman & Wonder Woman" or "Wonder Woman & Superman" is never going to sound as natural as "Superman & Batman".
JLU, the animated series, made some steps in the right direction by pairing Wonder Woman with Hawkgirl. It was rather contentious, so I'm not certain it was a friendship, exactly, but it was certainly a social pairing, regardless of what their attitudes were toward each other at any particular point in the series.
Now that Wonder Woman and Hawkgirl are both in the JLA, will this pairing be reiterated? Perhaps it would be better if Wonder Woman were strongly paired with Black Canary, who like Wonder Woman is a hero with a strong Golden Age pedigree. It might help in the never-ending battle to have Black Canary taken seriously (because that'll have another serious setback when they have marry that loser, Green Arrow, whom she should have dumped permanently about 10,000 times ago).
Of course, since someone at DC seems insistent to marry Canary and Arrow, those two are, unavoidably, going to be a social pairing; so, maybe Wonder Woman should be best friends with Hawkgirl. Hawkgirl could certainly use the boost after DC fumbled her own title.
Regardless, Wonder Woman, of ALL female characters in the DCU, should have at least one female superfriend!
And, NO, it can't be Vixen. Ick.