OT indeed, this is about a kernel and you're asking for a userspace feature. Also, there are large number of "contenders" in the Linux based OS space which may

OT indeed, this is about a kernel and you're asking for a userspace feature. Also, there are large number of "contenders" in the Linux based OS space which may have the UX you want, and if there isn't one this sort of thing tends to be pretty easy to tweak and suggest changes for (unlike in most of Google's OSes.)