I have always found that double quotes were good enough to specify inclusion and I did always use '-' to specify omission.
Thinking about that, I do now get your use case.
Can Google try and make + a double operator? We know that G+ only allows you to have your real names on your profiles and the '+' for G+ is to specify a person. Maybe Google will treat the '+' as a G+ only if it has a relevant profile to show and otherwise leave it like it is?
That actually seems like something that Google should be good at. In "The Plex", they talk at great length about the bigram/trigram problem (New vs. New York vs. New York Times) and the context of deciding when you're searching for a person versus a term.
Can Google try and make + a double operator? We know that G+ only allows you to have your real names on your profiles and the '+' for G+ is to specify a person. Maybe Google will treat the '+' as a G+ only if it has a relevant profile to show and otherwise leave it like it is?