A stand-alone management application for large volume already exists (intended for business and schools that issue Apple devices): https://itunes.apple.com/us/app/apple-configurator-2/id10371...
Well, I was more meaning like moving 20+ gig of music or other data, not for managing devices. As far as I know, the apple configurator is more of a management tool not an individual device tool (for sending media)
Then again, if they do go towards a totally wireless phone, I guess it would only be sensible to just ditch the lightning port entirely. and have a fully sealed case.
Still, I'd be pretty happy to have a stand-alone sync/management app; right now I use iTunes as an staging ground just to make sure that whatever goes on the phone looks right in iTunes first (correct tagging, correct album artwork). I don't mind it in this function, but if I could I would do away with it.