Regarding more channels, are not all synced to Reapers metronome, thus why not loading a new super8 on a new track? But never tested super8 much, as I made a request once for a 16 stereo channel version. First 8 stereo channels, then 16 stereo channels, why not? Because it is Reaper. I was imagining playing around with synths, then creating loops, without losing information, meaning stereo field. Also with hardware synths, this method can be powerful and fun.
Btw, in case noone heard of it yet, any mono synth can get a poly synth, via a pure data based vst, free, see
https://github.com/MikeMorenoAudio/M2P
https://www.youtube.com/watch?v=7d3IagGN50E