I do think the writer was trying to evoke the Furies. I also think they utterly failed due to a bloody stupid name. Even ignoring historical implications (because not everyone knows the etymology of the words they use), it's just a shitty name. Period (pun very little intended ;).
It's actually a cool and damn frightening idea to have these three (don't care about Harpy much honestly) team up at the height of their crazy/evil phases to end the world. (Though, can't we have a Promethea-like *good* end of the world for once Marvel? Seriously.) Especially with the air of "you really have no fucking prayer" that they seem to have.