Oh nice then, but it will be a good idea if you also create a system for template designers so they can have adjustable values and settings in admin panel for each template (like the simple wordpress template settings).
Custom text fields, dropdown menus, sliders, image uploaders (for logo and slide shows), variables, template css edit in admin panel etc. So you can control for example the copyright text, some footer links (social links) or as you said the number of columns and their width, different see more javascript settings etc..