I do think about this stuff, though I have different practical applications of the ideas these days/years.
I grew up as an instrumentalist, putting 10k hours on both piano/guitar, and creeping up to that on drums/percussion. So in a previous (previous (previous)) life, I would spend hours a day working on the specific (generally technical) requirements of a given instruments. So running through scales/arpeggios on piano, then sight reading, repertoire, improv, etc… I would have whole routines worked out, and would just hack away at it, day in day out. At the time, unfortunately, I didn’t build in too much ‘exploratory’ time, though that would find its way in here and there. I do think this is incredibly important, in that vanilla ‘rote’ practice, does very little for you. If you’re not mentally engaged, it’s not as efficient as it would be otherwise. So 1h of more engaged (mentally) practice > 3h rote “doing stuff”.
At some point I made a conscious decision (a more accurate representation would be that an unconscious decision happened to me) that I was no longer a pianist. For a long time I still thought about music through the lens of being an instrumentalist. That was (and is) no longer the case. The music that I make, and want to make, doesn’t jibe well with those 88 buttons, or 24 frets (or 128 values).
So what it is to music these days is very different for me. I still do woodshed work, although not it is typically on practice pad (and drumset before I moved), as I feel(/know) that my hands aren’t where my brain is, with regards to physical technique on drums/percussion. So I do vanilla-ass work there, to improve my “chops”. Besides that, I spend a ton of time on my laptop, programming, and thinking about ideas for videos/things/pieces/instruments/etc… I spend a lot of time talking to @Angela about creative stuff, and planning future instruments (getting excited about finally getting into modular etc…). I view this stuff as practice, but even that sells the term short. I view that stuff AS art, as living through it. It’s not the preparation for it.
On a more improv note, I have spend periods of my life drilling things, like improvising, recording, listening, adjusting, and doing it all again. I did that mainly when coming up with a series of pieces for snare+feedback.
Although this is not something I do, I imagine that just ‘practicing’ modular stuff, or rather, working through conceptual models of exploration and routing, is invaluable, and worth doing, methodically or otherwise.