I think the main thing about Jenna that's appealing is we know she's trouble, but she's got a similar charm to Nami. Anna we know is trouble also, but she has the predator vibe, and isn't particularly hot - she's a wolf in sheep's clothing: her main attraction is that she's so hungry for protein shakes to keep her fitness up.
It'll be interesting who in the bookclub will be lewdable, other than the ones we already know like Amber (I won't include Sasha, Nami or Robin there, they just happen to be in the book club). Most are just there to create an ambience of thirsty cougars, I don't think we'll see that many of them actually doing anything.