I'd really love to see a PVP element in the game, so long as it's just an option for people who like that kind of thing. I played a really fun MUSH ages ago where you could choose to be PVP by choosing to be a member of a clan, other opposing clan members then becoming targets, or you could just avoid the PVP element and watch the clan wars whilst playing the main game. Problem with having a PVP element would be that you'd only be able to do it across the internet, and one of the major draws for this game is its offline and you can play it anywhere.