It would be great if a future version of SpectraLayers could unmix two similar instruments positioned (somewhat) left and right in a stereo image. Currently, both instruments appear in the same track.
For example: Two guitars often play simultaneously, split between left and right while mixed in the center. If this is the case (i.e., one guitar is louder in the left channel than in the right, while the reverse is true for another guitar), both guitars should get their own unmix track.