'Girly' though the Fey may be, when I read it my first thoughts went to A Midsummer Night's Dream's Oberon and the Green Man - neither of which is particularly effeminate. I think between satyrs and centaurs and such, there would be plenty of room for masculine characters interspersed with things like dryads and nymphs. 3nodding
Not that any of the other factions really have one either, but have you given any thought to a mechanical identity for your fae? Archetypically the fae tend to be benevolent tricksters, though I'm not sure how best to represent trickiness in contrast to the Hellspawn's outright malevolence. Copying and disabling Properties is something that's been discussed elsewhere which would fit, and would avoid the obvious answers (debuffs) which have already been given a more ominous flavour.
Shintouyu
You know, I imagined the fair-folks would team up with the Avalon faction.
Archetypically speaking, faeries have a couple of obvious philosophical distinctions from Avalon. Firstly, the fey tend to be portrayed as highly chaotic; they're traditionally used to represent the seemingly fickle aspects of nature. Avalon, however, is highly ordered and civilised - they rely on that structure considerably, and faerie pranks and bacchanals wouldn't really fit what Avalon is going for. Secondly, faeries are extremely natural - they're representative of nature, and often actively seek to return things to their wild, natural state. Avalon, on the other hand, is extremely artificial - they rely on arcane magic, on bulky armour, and on arbitrary laws in order to survive. The fae are very much about the wilderness, while Avalon is very much about the urban sprawl.
Philosophically speaking, the fey are most directly comparable to how I interpret the Flameborn - they both have a distinct affinity for nature (the dragons because of their high position in the natural order, the fae because they are facets of nature itself) and both tend to be rather fickle and chaotic. As such, it would be relatively important to draw a strong philosophical distinction between the two, so that it's clear what the disfunction between them is. The most obvious to me seems that fae would perceive the natural order as cyclical (with everything mutually supporting each other), while the Flameborn perceive it as hierarchical (with themselves at the top of the food-chain, both literally and metaphorically). This distinction between the more predatory and the more holistic interpretations of nature would probably be enough to distinguish the two, though I'm not sure how one might represent that difference mechanically... sweatdrop