Ideas for new sites should be directed to the owners, which you can contact them using the email located at the bottom of any site. 
Keep in mind, the cost for a new site is around $3000 and the funds must be raised independently. 

I don't wish to sound pessimistic, but I don't think that this idea is the greatest, as:

a.) The ones who aided in creating the original World of Mystic Falls may not be very appreciative if their hard work was all copied so another version of their site could be created.
b.) The user base would be quite small, as the user base for World of Mystic Falls (English) is already quite small. 
c.) With the vast amount of new sites already in progress, raising funding and finding staff will be increasingly difficult.