I think that's a property of the piano though. If every note had an exact lining, it would seem to work better (unless you were very used to the old system).
Many people have tried to replace standard notation, over several hundred years, and no one has yet come up with a compelling alternative. So it's probably a very difficult task. Systems that are evolved over a long time, like musical notation, are often far more robust than those that are designed from scratch.
If you're really serious about proposing an alternative I would probably start by considering why other competing systems have failed.
I'm not really serious about replacing it, more like writing your own OS: it's fun to do and you get a better understanding of why the existing systems work.