I agree ( if anyone actually said this) that its all about the interface. Dont add a host of new features like triple harmony auto generate, just give us a clean easy interface this will do the basics -- generate a credible intro, let you tweek the middle chourses easily, and generate a credible ending. That's it! Do it in a very simple interface that works like a wizard. Keep the complex stuff for those who want it but dont force people who are more muscian than computer head to use it to get good results.