alt Hacker NewsWindows also does a neat trick Linux lacks: automatically adding more swap, up to a limit. Systems with loads of RAM barely lose any storage to swap, but once they do get hit, they can get many gigabytes of swap space without user interaction. I believe macOS does it too, of course.
I'm sure there are many reasons why Linux can't do that by default, but it's a real shame.
I assume that's primarily because the stance of most distros would require something like that to be strictly opt-in. I don't know if it's possible to trigger a service based on overall swap usage? But given that the oom killer exists I don't see why it couldn't be trivially repurposed to add swap files on the fly.