Oooh I see. Well, I guess from my POV it's just as overdone as Sun, etc. but then again I have seen A LOT of SM OCs. The real challenge of course is making one of those cliche characters in a non-cliche way :3
Sailor Moon Dork Alert! The concept of "Sailor Earth" is hard to do well because the Crystal for Earth is already taken by Tuxedo Kamen in the original story. He essentially is Sailor Earth, but since he's a dude he kind of skips out on the miniskirt