I love the idea of a polyphonic eugene. I am using it mainly for sequencing funky rhythms and sometimes there are >5 eugenes in my patches. One thing, I would like to see in a polyphonic version would be some kind of visual representation of overlaying steps.
If the selected sequence is always represented with white dots, it would be nice to show another selected sequence in another color. For example: I select the first channel for basedrum and enter some values. I activate “overlay” for that channel. I switch to channel 2 for snare and see channel 1 as red dots, the active channel 2 as white dots and all steps that are identical in both channels as red/white dots.