Yes as SignalProducer posted, more virtual tracks to show in AUM so that I can route the ST3 tracks AND add in onboard effects and other instruments for live performance. This may sound like a niche request but this would have huge benefits when performing loop sections of a song. Other effects and modifiers can be added in, other instruments etc.
This is supposing that ST3 is not the final app, the main app. The benefit is that ST3 code need not incorporate diverse mixing routines and simply leave that patching to another app farther down stream.
Yes, this is specifically in the way AUM handles ST3.