Since you’ve talked about OpenMW + mods, do you have any recommendations for someone who played Morrowind on Windows years ago and would like to play it again on Linux via OpenMW? What works, what requires tinkering? Any mods that you recommend?

The current ones are gasket-mounted

I’ve just remembered that Pulsar also sells ISO TKL keebs, I think those might check all of your boxes. There is a Hall Effect one and a traditional mechanical one

MonsGeek has some ISO keyboard kits! Their website is kinda confusing but you can easily find them on AliExpress

Graphene OS does something similar. It sandboxes GMS like any other app

That’s another issue. AOSP is effectively being developed in a closed environment, with only the final code being published on github after release. So AOSP if effectively not being developed in the open any more