I think it's possible to sync all profiles at least from  some relays. i accidently stored 120k profiles in the browser yesterday, so should be possible to hold then in a DB and search the DB locally on the Dvm. I can set something up, if you wanna help, always welcome.

About the return, I think it depends how its defined, but it should probably be consistent with notes, or we add an option to choose what should be returned.