Even if you're more active on another pirate (Chris, Will, Nate, etc.) you should probably stick with Johnny Darkwalker solely because that's you're main identity at the moment. Perhaps when you begin to spend more and more time on another pirate to the point where that one becomes you main, like Mr. Fireskull, then I would suggest changing your username.
Remember, you can only change your username once every year. I'm not forcing you to not go through with your decision, but for the time being I would recommend against it
