You are not alone in the not follow the masses. I am so sick of Naruto, Bleach, FMA and DeathNote cosplay... XD I can only shoot the same subject so many times before my brain melts. Especailly Bleach and Naruto... @_@ Those two series get on my nerves for some reason.
I agree on all fronts, especially with the Naruto cosplay, way too much! xD
Personally, I want to cosplay as an obscure video game character named Ryu from Breath of Fire 3, but not just in normal form, also in his ultimate dragon form which makes him look super saiyan (DBZ style).
I like series that aren't mainstream, especially Jing king of bandits, Photon: the idiot adventures, Petite Cossette, Please Teacher, Please Twins, Shamanic Princess, Key: the Metal Idol, etc.