Being able to serialize a class with generics in Unity Inspector

CameraSettings.cs

        public class CameraSettingsGeneric<T, U>
        {
            [HideInInspector] public T camera;
            public float minZoom = 1f;
            public float maxZoom = 5f;
            public float zoomAmount = 5f;

            [HideInInspector]
            //public CraftFacade followObject;
            public U followObject;

            public bool disableMouse;
        }

        [Serializable]
        public class Settings : CameraSettingsGeneric<tk2dCamera, CraftFacade> {

        }

When you create the subclass as a child of CameraSettingsGeneric you're able to serialize the subclass in unity's inspector.