Sadly I have to agree, I think she's the weakest one. /: The art design of Hercules is pretty abstract, and Meg in particular is highly stylized. Obviously Funko has a super distinct style of their own, and the movie's animation doesn't exactly lend itself to their medium. Unfortunately I think they went way too literal with translating her. She has rather angular features, which look harsh in Pop form. I did just a teeny bit of super quick Photoshopping to soften her up a little, and I think there's already some noticeable improvement.
Still, I can't even remember the last time Disney released new Megara merch, other than pins (and even those are few and far between.) So I guess beggars can't be choosers, right? If it were more expensive I'd probably pass, but I can live with spending ten bucks on her. Maybe if these sell well, Disney will start to realize there's a big demand for more Hercules stuff.