As much as I'm not a big fan of J Scott Campbell (His MJ cover with her on the couch, a month or so ago was awful, IMO) or the idea that Felicia might be considerably more antagonistic toward Peter (And I'd argue that she can definitely be interesting if this is going to be done right and isn't a rerun of their first encounters), I love this cover, except for the fake nails and the almost buck-teeth.
And I'm definitely with you on the bare feet=sexy statement. That said, it's the only thing that could've worked for this cover idea, really. To play it cutesy and put her in socks would be out of character.