Hmm.

There are a lot of developers that could probably really do with some exposure to this kind of environment.

I could definitely see myself hugely appreciating, say, a 6 month stint doing... something relating to the nitty-gritty of keeping a distribution going, learning what the pitfalls are, what the unintuitive stuff is, etc. Basically being some key point-person's assistant (the one who deals with major disasters), or something.

It would be even better if some of this work could involve direct enterprise support: learning what customer requirements are, getting a sense of scale, etc. I can see this kind of information (enterprise support) being the most valuable - actual bespoke software would likely be a major focus of such training, and this would tech would-be developers about the disasters that can happen 5 years or 10 years on from "I have an awesome idea" "wow it's so elegant" etc etc. (Continuing from the previous point, perhaps there could also be an opportunity to be the assistant to the on-call person who sometimes wakes up at 3AM.)

You could position this as something for people looking for DevOps jobs, and maybe make some kind of cert for it as well (this would likely help with/create traction for/be needed for enterprise-level interaction).

I personally would have zero issues with signing a small book of NDAs to get this type of training myself. The NDAs would just cover how I learned, not what I learned, and in this context the how would be largely irrelevant (but at the same time incredibly invaluable). FWIW, I'd personally greatly benefit from a good debrief at the end of the course to help me find all the little ways I might accidentally leak something (eg a few too many words fall out before I stop myself etc) and learn to catch myself quickly.