Not sure if this will be a thing. But what about a Create A Sim like feature to make custom guests for the park. You could make a guest that could look like yourself or anyone. Now that would be cool. Also cool if you could create families or couples. So those guests would be seen together inside the park. Say the guests could have traits kind of like the sims 3. So if that guest got a something they did not like. It could make them sick or have a funny expression or reaction.