I would love to see the "folklore" aspect played up in future expansions. The Neverborn already have a good nightmare flavor, and Zoraida is definitely folklorish. Lessie: Neverborn could add in a fey-ish subfaction (malevolent faeries?) Resurectionists could add a vampiric-style guy (suave, to fit in with serial killer/grim/mad science) Guild-- I'm not 100% sure here. Jack, the giant-killer? the boy who cried wolf? Little Red Riding hood grown up? Outcasts could play up the hamelin pied piper thing. Arcanists could do something with a old fashioned jewish golem thing : words inside a clay body that gives life to the body is awesome.
Other random ideas could include some sort of weather controlling master (native american?) India is a goldmine for great ideas, too. Shiva is disticitve and really awesome: that could work. I also think "slave magic" or an even more voodoo-centric master would be great. Baron Samedi, Papa Legba, Voodoo zombi, etc. There is an enormous amount of area to mine here, and It could be fun as all get out. Finally, there is also the whole chinese railroad worker thing to play off of, too.
Wow, this got a little rambly. I'm just a little excited.