For Experienced Musicians

Having suffered through the experience of learning to read music, you should have a medal or a trophy, or maybe a Purple Heart.  It is a daunting task, and not everyone is able to do it or be willing to stick to it.  So there may not be any value to you in learning yet another way to read music.  Once you've really learned a piece, you're probably not really reading every note and are mostly relying on muscle memory with the sheet music providing queues to jog your memory.  However, I am aware of some who are in fact weary of struggling to learn every new piece because that means having to pay careful attention again to all the challenges of reading traditional sheet music notation.

So some experienced musicians might be open to find an easier way.  Already knowing how to play one's musical instrument, makes it easier to focus just on the notation.  Ideally, a simpler to read notation can be picked up relatively quickly and used as a "2nd language".   If you would like to read a more comprehensive description of WYSIWYP notation, its advantages, and the overall project, read this description on the Music Notation Project (MNP) website.  The MNP is a community of alternative notation designers.

There are also some special occasions where a musician might want to use WYSIWYP such as learning a musical passage that has complex rhythms.  For these, it may be helpful to be able to visualize the time relationships among notes on the same and different staves.  Syncopation in particular may be one of those cases.   After mastering the passage to the extent of being able to play it with muscle memory, the musician could return to the traditional sheet music.   

The following shows a straightforward 5 bar example of syncopation on a single staff.  It's from an online tutorial on how to read traditional notation syncopation.