That integration would be fantastic and one I have been searching for.
In my mind, everything starts and ends with identity. Unfortunately that’s also where I stopped as Ghost doesn’t really have an elegant way to play with others. I even went as far as asking about external identity providers (Leveraging 3rd party sign-in).
To give you some idea, I’ve looked at Discourse, Forem, Peerboard, Mighty networks and Circle - all have their pros and cons.
But I keep coming back to the concern around seamless identity where a user will move from one platform to the other without it being clunky.