I absolutely endorse restarting a roleplay you love! (Dark Hearts and City Streets is a repop of a roleplay I love with the main character dynamic outlines and still room for people to come in and make the characters their own. And I have restarted the repop at least twice v.v)
As for chracters, I am a bit of a conisour of bad guys! lol I am fairly good at them, at first out of necessity (my former roleplaying group my was my group of high school girl friends who couldn't write convincing guys or bad guys >.>) but having gotten some skill at it, I do rather enjoy it. So I can if you like. I am gender indifferent so far as writing is concerned, the only exception being when I pass 15 active characters of the same gender v.v (I like to keep active under 20 so they don't blur, and probably fewer now that I work full time.)