When this will be ready, I will use it personally with my PSRA3000 to :

- Play the Yamaha sounds from a second keyboard that is a lot better than the PSR
- Play with Aftertouch. Even if the PSR keybaord does not have aftertouch, it reacts to it from outside
- Try all the OTS from the huge Yamaha style library, and save the best OTS as my favorites presets list to be available on every styles
- Tune the presets to my taste more easily with a big screen
- Be able to play 5 Rights layered instruments together. Not only 2
- Maybe play the styles from vArranger too... later, when it will be as good as the original, as vArranger is somewhere more easy to use for playlists, displaying pdf etc... tuning volumes etc and save... easily