Is there (or are there plans for) an export to traditional notation? I'm sympathetic to the benefits of a modified piano-roll notation, but if you want to have your little ditty for saxophone, English horn, and piano performed by human beings, they're not going to be able to do so without a lot of practice.
Traditional notation (although perhaps "antiquated" for some uses) is remarkably efficient from the perspective of information density, and musicians could easily sight read the two bars of music there without thinking about it at all. It's also widely known by most musicians, and able to deal with lots of things you'd need if you wanted to hear your music performed. (For example: presumably your composition is written in sounding pitch; your wind players would need to transpose from concert pitch or have transposed scores somehow.)