Out of curiosity, what's preventing someone from making a regulatory db similar to tzdb other than the lack of maintainers?
This seems like the perfect use case for something like this: ship with a reasonable default, then load a specific profile after init to further tweak PM. If regulations change you can just update a package instead of having to update the entire kernel.
Having a good, dedicated e-reader is a hill that I would die on. I want a big screen, with physical buttons, lightweight, multi-weeklong battery, and an e-ink display. Reading 8 hours on my phone makes my eyes go twitchy. And TBH it's been a pain finding something that supports all that and has a reasonably open ecosystem.
When reading for pleasure, I'm not gonna settle for a "good enough" experience. Otherwise I'm going back to paper books.