I would need a 3d world to be built into my DATABASE. I would also need each user to have the ability to have their own house and customize their interior. All of your friends would be on a virtual road and you have the ability to go into their house and post comments on their virtual wall. I would also want to make a referral program where if you get people to join you earn fake money. With this fake money you can upgrade your house and your avatar. There is a couple more things, if you can do the requirements above please leave a message.