SO, after some more thought, IMO the practical next steps for me are:
-- grab another sequencer when one I like is in stock. I generally don't like very menu divey modules or ones with huge instruction manuals; I prefer something that can be learned by working with front panel controls and modest manual/video reference. My current top picks for a next module are Rene2, Verbos Multistage CV, and as I'm interested in acid, the Stepper Acid. Those are all out of stock currently at my preferred vendors. Waiting would be okay. I'm also considering Mimetic Digitalis or Verbos Sequence Selector to give an ability to select sequence steps like @Ronin1973 was discussing; both of those modules remain somewhat baffling for me, the Verbos especially. WMD Metron is a top candidate for me for trigger / gate sequencing, though I'm feeling that as a lesser priority currently. And @Lugia and @eexee points about a smaller seqeucner being useful, I will keep in mind. Then of course I would need supporting modules (some of which I have on hand already), @farkas ideas of switch and bus would be great, as well as the variety of support modules mentioned by Lugia above. SO many possibilities!!!
-- all considered, more time on rig, more exploration using what I have, that should help me get a clearer sense of what will suit my tastes. But practicing is harder than fantasizing about new modules! ; )
Last, a couple random responses to above items:
-- @eexee, thanks for the post and video above, very cool! I also suffer from a lost post every now and then. Re: Nerdseq, it looks deep, powerful, and well respected (?), but IMO its not for me because of the interface. If it appeals to you, then it could be a good choice!? On scanning the Doudoroff list, I did not see a lot else that looks just like it, it seems pretty unique. I can recommend you check out Five12 Vector, it is very powerful, yet still very easy to use, which is great for me.
-- @farkas, I'll have to try the switch and bus setup you mentioned, that definitely appeals to me! BTW have you yet seen the additive sequencing post (#5 above)? I get a sense that that setup would be interesting for you.
Thanks everyone! Additional ideas / questions / comments would be welcomed.