It should be an easy merge into 4.7. I’m trying to be careful about that for at least the next few changes. I’d like to have something that folks can just zip up and overlay over a 4.7.x install. There are a few changes coming in the not-too-distant future that may break that, but I want to get as much taken care of before that as is reasonable.
Head model is next on the list as it currently stands.
Just let me know if you have issues getting things merged into 4.7.x.