As the title says. I think it would be a nice in-between between no/all unambiguous imports on the fly. I don't want it to add all unambiguous imports, as it may add something I didn't intend (I might be missing a dependency, for example), and I want the IDE to remember me from where what I'm importing comes from.
However, I know "Optional" comes from core Java, for example. I don't care at all if it auto-imports it.
Someone could make a plugin for it, but it should be very easy to implement for Jetbrains devs anyway.