Think of it like some liberal art class -- one way is to just open up the door to the supply closet and say, "Go for it!", while another way is to have one box of oil-painting stuff, another of acrylic-painting stuff, another of clay sculpting stuff, et cetera (as well as the general stuff in the closet), thus giving folks handrails for picking what to go with (although they're not stuck with just one, and they can still go with whatever mix-and-match they might go for).
Ok! So along those lines, I started to come up with some 'handrails' for Windy City's fae sphere. So far I've come up with these for fairy-types that could work as playable characters and would have a pretty good reason to be in downtown Chicago, but I could still use a couple more.