I had a thread going on the lfpf forum that was maybe an adjacent line of thought to what the OP was asking. After shifting some gear around, here is where I ended up.
For me, the simple act of being outside and photographing is enjoyable so to an extent the format I head out with doesn't matter. I almost always have fiber-based prints in mind as my intended output, so that does influence things.
Sometimes I want to carefully consider each negative, and sometimes I want the seemingly increased freedom that is afforded by roll film.
(one can agonize over each frame on a roll to be sure)
As to further investment within systems, There might be 1 or 2 large format specific lenses I will keep my eyes open for, but other than that, I am in the care and maintain phase; if I break something it will likely be fixed or replaced.
35mm is capped unless a freind/colleague says "hey, take this camera that's been sitting around."
Medium format is also likely capped unless my Mamiya 6mf breaks and cannot be fixed a 4th time.
Bear in mind that I am a hobbyist and derive zero income from photography. This decision tree for a working pro could look quite different.