Somehow...as "cool" as Seven is, she doesn't really strike me as a "heroine". Many might disagree--but I just don't see her that way. She seems too bitter to me, too cynical.
I see a great deal of heroism--or potential for heroism--in the more "innocent" female characters of Trek. An air of clear-cut devotion to what is good, coupled with an enthusiastic optimism for the future--is, I think, a central element to heroism in such characters as Ezri, Rand, etc.
Oh, I very much disagree. I think there's the potential for heroism in many different personality types and personally, I think that it's often more interesting when that heroism comes from someone cynical and conflicted like Seven.
I don't disagree. But the central element is heroism--regardless of its form.
And since are free of any such concerns, so we can indulge our fantasies, including the darker ones. How often do fictional villains or anti-heroes become sex symbols? In fiction, just like the most interesting characters are not necessarily the ones you'd want to hang out with in real life, some of the characters you drool over might be those you wouldn't want to have a relationship with, or in some cases, you wouldn't want anywhere near in real life.
) The only STXI characters who have more votes than their predecessors are McCoy (not surprisingly), Scotty, and Uhura. Zoe's Uhura is beating both Gaila and TOS Uhura, which comes as a surprise, since every other thread and poll I've seen would indicate the opposite (usually followed by lots of comments about curves or lack of them...). 
