Hello Gabriel,
After looking at the composite website, the code and my time constraints (PhD, Familly), I would like  to join forces with you on Composite.
What is there to be done? On the long run I would like to take some technology of tX into Composite, especially the turntable-feeling and the scratching ability. This could be done by creating a new window, where the instruments/samples are portrayed as turntables which can be scratched either by mouse or external hardware. What do you think?
Regards,
Gerald