We need to move away from investing any time into MultiVolume infrastructure and instead spend that time with making everything compatible with Volume Sequences (so that we can phase out the limited and mostly redundant MultiVolumes). To facilitate this, I’ve submitted a pull request that allows selecting a volume sequence (a sequence node that contains scalar volumes) as CLI module input. After the pull request is merged, volume sequence can be used everywhere instead of multivolume as input in all CLI modules.
@mikebind it would be great if you could test this.