Unless apt-get install xinit did it automatically, X11Forwarding yes seems to be the default.
Unless the server can maintain pre-existing connections during a restart, I'm sure my ssh server didn't restart as I had three other sessions open that all continue to run.
I did have to log out and log back in which then made the DISPLAY=localhost:10:0 env variable appear after the xinit install.
Having a minimal system is not important for me at this time, and probably never will be, as I prefer native development and debugging, But I think it'd be nice to have some documentation or guidance about the packaging. Seems many of the package names vary among Jessie for Beagleboard, RPi and PCs. I obviously end up dragging in a lot of stuff I don't really use as I stumble around trying to get all the bits and pieces I want installed.
To sort of make my point, is xapps the package named x11-apps?
I don't see xapps in the dpkg --get-selections output on either 2015-11-12 Console or 2016-03-27 lxqt, 2016-03-27 has x11-apps, but my 2015-11-12 Console system that I've just recently got ssh-X working does not.