> 1. It's hard to have an IT department when it's about 10 people in a whole firm.

I think that's both a blessing and a curse. If it was a 10000 person firm it might be a really big step, but right now it's a small step! Nothing wrong with getting in a role early and growing with it (and the company).

> 2. I'm afraid it wouldn't be as much fun if all I did the whole time was something like this.

That's true, and there are very real downsides like burnout and there's on problem with staying where you are if you're happy and getting what you want out of your job, but if what you're doing now isn't your dream job, and you don't absolutely hate the upper tier of the company, why not do a job you like slightly less for much increased future career prospects?

> This is a plot that hinders my career my whole life: too interested in too many things to fully commit to one of them. And the field for which I feel enough passion (music/studio work) has no money to compete with other jobs I can do. I really wish there was some position to exercise more of my wide but not-excitingly-deep skill set.

Yeah, that's difficult -- Imagine how much time you'd have to be a renaissance man/woman with the money/freedom a good C-level gig might afford? Of course responsibility would also increase, but it might be possible to keep it to the same usual 9-5 schedule, and that might not be too different from what you're doing now, except with a bit more stress at work, and maybe in a year or two you can take a whole year off and just do music/studio things? or fund a "startup" that's really just you having fun in the music/studio space and maybe finding a way to make it your living (if that's what you want).

Definitely don't decide your future off of a random HN comment... But also maybe it's worth some thought.

> In regards to writing it down: I have a residual sense of guilt for not expanding the libvirt wiki right after I was finished, but, honestly, I was low on energy and had a bunch of my regular work built up. And, as usual with memory, I'm already not clear enough on the details to write a coherent guide.

Well if you've got a list of TODOs, why not write it down? even if you share something as vague as you wrote here I'm sure it'd give someone out there enough of a clue to move forward.