There is a water slider, but this only supports water oceans. There should be more materials so more types of oceans can be made. For example, the methane/ethane lakes on Titan. There should be sliders for methane/ethane, ammonia, chlorine, and sulfuric acid, as these substances have the potential to create oceans that may have life arise in them. Also, there should be a carbon slider, to simulate carbon planets. And a carbon dioxide slider, because carbon dioxide is quite common and quite important for many planets. Also helium, and other noble gases. These gases might even change the color of atmospheres. Nitrogen and carbon monoxide can do this. Sulfur too, and also the different types of metals that exist cause there are a lot of metals. Overall, there are a lot of different materials that would be cool if they were added. We can discuss what should be added below.