Heya,
just tried the new macro stuff in Renoise 3 and came up with a simple Supersaw instrument.
It’s rather large due to the fact that Renoise doesn’t (yet) support randomized sample starts.
Anyways, the macros:
Spread: Adjust spreading
Mix: Adjust the mix (side/main)
Attack/Hold/Decay/Sustain/Release: Modify common envelope
It’s sounding much cleaner than the original Supersaw (which had naive oscillators and a tracking highpass filter). As soon as we have random sample starting points, one could make a ‘real’ Supersaw XRNI 
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With ‘clean’ I mean fully bandlimited, high quality overkill … I tend to waste HDD space …
Anyways, whatcha think?