Trying to over-specify goals and whatnot is the #1 killer of new communities. It's best to let things develop organically with a bit of guidance from mods/admins and the community to keep jerks and Nazi nonsense out. An image of a specification will emerge by the time it's necessary to specify to keep things from getting out of hand.

I just joined but I'd say if it makes you smile, chances are it will do the same for us, so share away! :D