My two cents is that you should stick with one row of well-chosen modules and let them guide you. Basically focus on what your modular can do versus what it can’t.
The design of these modules has gotten so complex over the past couple years that oftentimes one module can do many, many, many things — Three Sisters, for example, can mix, filter, and crossfade signals, as well as generate chords, inharmonic tones, LFOs and a ton of other stuff that I haven’t even discovered yet. And that’s one module.
Personally I’ve found that the “one foot in” attitude (i.e. “I want something that does X, but also Y in case of Z”) oftentimes doesn’t result in anything that great because the “solutions” that come from it typically don’t actually address the fundamental problem: choice.
That said it sounds like you might be looking for something like an Expert Sleepers FH-2, with which you would be able to beautifully sequence your modular with your Elektron or computer — with the caveat, of course, “if that’s what you want.”
I hope this helps!
P.S. You might also want to check out Mutable Instruments Marbles. That and FH-2 might give you the flexibility you’re looking for, and would take up the same space as the Hermod.