Id work on a template system Somehow. Then you can have your cake and eat it too. Changing up the UI could be as simple as clicking a dropdown box and choosing what you want. That way people would have a selection while working on other UI designs. But if that is too difficult, see if you can get rid of the dual row slide across management of items. Maybe you wont be able to, but what you have done so far exceeds expectations since its a custom launcher without the need for root access and has full store integration.