Ha, do what you want. You can always PM me about adding a character arc. 
Zathrax asked for the Waterdeep arc and that happened. Thor had one in mind, and Mizos has been dropping hints and stuff. (Mary and Lily) 
It also helps add to the story! If any of you ever have an idea, just PM me. Just because I have an outline doesn't mean you can't add on to it! 

And yay One Piece.