cant you do something similar to the unison and selector in Live by placing instances in an instrument rack... (multiple instances, chain selectors etc)
I don't think its similar at all (and I have Live 9.5 suite and Bitwig)
Only one layer can be played at a time, and the other layers are inactive to both your ears and your processor’s load.
Modulation and automated switching between layers.
Switch between layers without hard breaks or clicks, and your sustained notes and reverb tails will fade away naturally.
The Voice Stack modulator can be used in conjunction with voice stacking for detailed mapping control of each voice in the stack.
Voice stack count, how many voices each note should play, and assign parameters to spread for each voice. The Voice Stack modulator can be used in conjunction with voice stacking for detailed mapping control of each voice in the stack.
Sounds to me like this is a unique new level of combining VSTs and FX to make unique instruments, the thing it is prpobaly most similar to is S13 Multi-Instruments.
The real key I think WRT live is if (with the new streach algorythmes) BWS 'sounds' better (or even as good) as Live, if it does I no longer see any advantage at all with Live 10.