I’ve been quite often engaged in spectral foolery for a few years now, both for analysis and (re)synthesis purposes as well as music creation and composition. In all these endeavours on the wild wide side of sound, there’s a feature that I find lacking in SpectraLayers, and that is the implementation of the SDIF format. SDIF is an awesome text-based format for description/transcription of every (digitally reproduceable) audio feature imaginable.
I don’t expect it to be forthcoming any time soon if ever, but it would be great to have it.
All the best,