static-indexers

Why are static indexers disallowed in C#? I see no reason why they should not be allowed and furthermore they could be very useful. For example: public static class ConfigurationManager { public object this[string name] { get => ConfigurationManager.getProperty(name); set => ConfigurationManager.editProperty(name, value); } /// <summary> /// This will write the value to the property. Will overwrite if the property is already there /// </summary> /// <param name="name">Name of the property</param> /// <param name="value">Value to be wrote (calls ToString)</param> public static void editProperty