My condolences for the health issues.
For me, what I seek is related to a more mundane thing - as long as I have a setup consisting of several pieces of hardware and (to exaggerate) a tangled mess of wires, it stays at my desk on my work / music corner where I rarely like to stay at for very long myself. I also end up getting bored at āintegrationā issues. Having a single instrument usually makes me carry it around and use / compose / practise a lot more. (I think I made more sketches and ideas with Deluge than any other piece of hardware just about ever, and now that I mostly play a stringed instrument once again, itās something I enjoy because I can just plug it in and play.)
Elektrons are sort of the obvious choices that always come to mind when talking about this. I think Machinedrum was actually the first hardware machine that āclickedā in that way ages ago - suddenly someone who was used to the power of software, and playing & recording things to a DAW, could make interesting tracks with one hardware box without feeling super limited or irritated.
My problem with Elektron is that their boxes are really always designed āsequencer firstā which isnāt a bad thing, but a choice that feels difficult to me. On one hand, they never sound super interesting to me without a lot of parameter locks and modulation (they really come alive and sound great that way) - and on the other hand, they arenāt āplayableā without an external MIDI controller of some kind. Iāve tried liking them enough to just make things with one of them, but it always feels thereās something essential missing. This is completely subjective of course.