I'd like to know if you think manufacturers design things in a stupid way on purpose. Like a vocal harmony that does not have a light on it, so that you cannot tell if it is on or off. Many other things. Such as a vocal harmony button that you certainly would use if you are gigging... and you can barely reach it, it's so far away. Who, in their right mind would design something like that?

List your gripes. And if you think they do it on purpose, expand, please. Why would they do this?