I add new common class - Actor. The main purpose of this - replace class Module that was used only for different modules. Now I faced problem that I need a lot of classes to have the same base functionality (Init Draw Input Update)
So I move class from module directory to display/actor directory (because this are mainly related to draw and in near future may have such thing as Z ordering (overlays system)).
Use this for class like Module, Window Manager, Entity, Model and so on. Anything that needs to be Draw.