@Lugia, thanks for the ideas above! Since my Vector+Expander can run multiple lanes of sequencing, it would seem I already have enough "source signal" to feed the type of signal flow you're indicating above. Cool -- I don't absolutely have to buy another sequencer unit to dig into this line of exploration.... still I'll probably want to add at least a Rene2 when I can get my hands on one!

Other forum folks, do you have anything to add to the discussion / ideas / suggestions re: multiple sequencers?