I dont think things like that will ever be 'mainstream' - I think when you are into music it is easy to forget just how unmusical many people are, like wise with software/technologyBagatell wrote: ....The systems are being sold, they´re just not mainstream yet.
my son has been getting into this show called 'dont forget the lyrics' and it amazes me sometimes just how unmusical some of the people on there are - they're nervous of course, but not even vaguely in the same key as the song - like they have no concept at all about harmony/pitch etc
I am the same with visual design - I am an auditory person and have absolutely no concept whatsoever of what looks good visually (as my mate the web designer kindly pointed out when I showed him a website I designed) - but I still like to look at pictures sometimes!
I think there may be a reasonable market for this kind of tweaky stuff in the already existing music tech scene we're all involved in, but in terms of the worlds population we're still very much a minority