With the Navigation Design Doc in mind, what is happening with regards to immersive-to-immersive navigation?

#383 was closed. Are there further efforts to get something in the draft? I think many of us are really keen on this feature to not break the power links provide while in immersive mode.

An implementation where an interstitial controlled by the UA, and the user knows it belongs to the UA using some kind of random image, shows the link you're being forwarded to would be a really good start.

I'd like to help out with this as much as possible, let me know what I can do.