Thankfully Raiden is from the Shire as am I, as in Yawk... So hopefully I pull it off quite well.
Not the true Shire, pfttt! All hail the Shirefolk of Yew!
As for the topic itself, only bit of advice I'd offer beyond cultural sensitivity is being careful who you "recruit" if you're going to do a whole band of these. The flaw with branding it around the public forum is unfortunately you're in a dificult position of perhaps ending up with a bunch of interest you didn't want.
Because what often happens when you end up getting a big band of "themed" characters together is that often it turns into slapstic or farsical roleplay quite quickly. The idea has a lot of potential to it if you take it seriously -
especially if you make yourself Altmerian, with a lot of the growing friction in the area - but if you push too hard and get too lapse you'll end up with five or six Och Aye-ing Charlie Chaplains running around just emoting drinking beer and hitting everyone.