Are there specific things you're waiting for?
New Sylphyo player here...
I would love to see a desktop app that consolidates and allows us to change all configuration parameters in the Sylphyo. The tiny little LCD screen and the complex built-in menu system make it awkward and time-consuming to make many of the necessary tweaks and changes needed to make the most of the Sylphyo. We also need the ability to save a backup of all our personalized settings in the instrument.
It would also be great to allow us to pick sounds via the desktop app and not need to use the menu system on the Sylphyo instrument.
I would love to see higher quality "built-in" instrument sounds made available. Of the limited selection that come with the Sylpho few are what I would consider "ready for prime time" or sounds I would choose to use in performance. (SWAM and similar instruments are wonderful -- and extremely expensive, as are many other sampled or modeled instruments available as plug-ins.)
How about a series of step-by-step tutorials (with actual narration, not just overly loud music) on how to setup and use the Sylphyo with Kontakt Instruments, Vital Synth, Dune3 and other desktop software synths and plug-ins.